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Onkyo TX-NR905

THX® Ultra2 home theater receiver with HDMI switching and upconversion (Black)

11 Reviews

Item # 580TXN905B

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Our take on the Onkyo TX-NR905

Here's one of the most versatile home theater receivers we've seen. The TX-NR905 delivers 140 full-bandwidth-rated watts per channel of high-current, low-impedance power, built on a foundation of impeccable Onkyo construction. You get decoding for the latest surround sound formats, including Dolby® TrueHD and DTS-HD™ Master Audio — two new high-resolution surround formats found on many newer Blu-ray players and discs. You'll also enjoy a host of entertainment options, including PC music, Internet radio, and flexible multi-room audio/video possibilities.

Here's one of the most versatile home theater receivers we've seen. The TX-NR905 delivers 140 full-bandwidth-rated watts per channel of high-current, low-impedance power, built on a foundation of impeccable Onkyo construction. You get decoding for the latest surround sound formats, including Dolby® TrueHD and DTS-HD™ Master Audio — two new high-resolution surround formats found on many newer Blu-ray players and discs. You'll also enjoy a host of entertainment options, including PC music, Internet radio, and flexible multi-room audio/video possibilities.

Connections for your best high-def video sources
The 'NR905 boasts some of the most extensive video capabilities you can find in a home theater receiver today. It will accept up to four high-def digital video signals at resolutions up to 1080p via its HDMI inputs. This allows you to hook up your HDMI sources, and switch easily among them while maintaining pristine digital signal quality.

1080p video upconversion
Onkyo also outfitted this receiver with Silicon Optix's acclaimed Reon-VX HQV™ video processing chip. This sophisticated technology provides cutting-edge video scaling and deinterlacing capabilities — including digital upconversion of all your video sources to an HDMI signal with up to 1080p resolution. You'll see improved detail and smoother playback from your video gear, and enjoy the convenience of a single digital cable connection to your TV.

Precision auto setup tailors sound to your room
For the most accurate home theater sound possible, Onkyo included Audyssey MultEQ® XT, a sophisticated automatic speaker calibration system. The 'NR905 uses the included microphone to analyze sound from up to eight different listening positions, then automatically adjusts level, equalization, and delay settings for each of your speakers. You get precise response across a wide listening area instead of just a single "sweet spot," so everyone in the room can enjoy optimized home theater sound.

PC music and other digital entertainment options
This receiver's Ethernet port lets you connect to your wired home computer network to access music files stored on a PC and listen to Internet radio stations via your broadband connection. The front-panel USB input let you plug in a compatible MP3 player, or USB flash drive loaded with your favorite tunes. Plus you get a built-in HD Radio® tuner that lets you listen to the free, over-the-air digital programming that many AM and FM stations now broadcast.

Multi-room audio/video
The 'NR905's three-room/three-source output offers especially flexible listening and viewing options for the whole family. You can watch the game in the living room while your kids enjoy a movie in the den, and your wife listens to stereo music from the PC out on the deck. For custom-tailored help using the TX-NR905 in a multi-room system, call Crutchfield's A/V Design Group.

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Product Highlights:

  • 140 watts x 7 into 8 ohms (20-20,000 Hz) at 0.05% THD
  • THX® Ultra2 certification
  • Dolby® TrueHD, DTS-HD™ Master Audio, Dolby® Digital Plus, DTS-HD™ High Resolution Audio, THX Surround EX®, Dolby® Digital EX, DTS-ES™, Pro Logic® IIx, and DTS Neo:6 decoding
  • analog-to-HDMI video upconversion (up to 1080p) with Silicon Optix Reon-VX HQV® video processing
  • Audyssey Laboratories' MultEQ XT eight-point auto setup and room calibration system (microphone included)
  • built-in HD Radio tuner with multi-casting reception
  • XM Satellite Radio Ready (requires XM subscription and optional XM Mini-Tuner package)
  • Neural™-THX Surround decoder for XM's HD Surround channels and gaming
  • SIRIUS satellite radio capable (requires SIRIUS subscription and optional SiriusConnect™ home tuner kit)
  • iPod® integration (requires optional Onkyo DS-A2x iPod dock)
  • three-room/three-source output:
    • powered and line-level stereo audio output for 2nd room (using powered 2nd room stereo output allows 5.1 home theater in main room)
    • composite video output for 2nd room
    • line-level stereo audio output for 3rd room
  • RIHD (Remote Interactive over HDMI) allows simplified remote operation with compatible HDMI-equipped components
  • 192kHz/24-bit Burr Brown DACs for all channels
  • back surround speaker channels re-assignable for bi-amping front left and right speakers
  • back-surround and front channel speaker outputs bridgeable for higher power to front speakers (minimum 8 ohm speakers required)
  • 40 AM/FM/XM/SIRIUS presets
  • aluminum front panel
  • learning/multibrand remote
  • 17-1/8"W x 7-5/8"H x 18-15/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • 1080p-compatible HDMI digital video switching (4 in, 2 out)
  • HDMI version 1.3a
  • component video switching (3 in, 1 out)
  • component video conversion
  • digital audio inputs: 3 optical (including 1 front panel), 3 coaxial
  • digital audio outputs: 1 optical
  • 6 audio/video inputs, including:
    • 1 front-panel input with composite and S-video
    • 5 rear-panel inputs with composite and S-video
  • 3 audio-only inputs (including phono)
  • 7.1-channel analog audio preamp input
  • 7.1-channel analog audio preamp output
  • Ethernet port for music streaming from a PC network
  • front-panel USB port for audio playback from USB flash drives and portable USB music players
  • RS-232 port
  • 1 pair of main speaker outputs

What's in the Box:

  • Black AM/FM/Dolby Digital/DTS/THX home network receiver
  • 70" Detachable AC cord
  • Wireless remote control (RC-687M)
  • 3 "AA" batteries
  • AM loop antenna
  • FM wire antenna (with push-on "F" connector)
  • Speaker setup microphone with attached 19.5' cable (3.5mm mono mini-plug terminal)
  • Instruction Manual (English)
  • Instruction Manual (French/Spanish)
  • Quick setup guide
  • Remote control code chart
  • Product registration card/Warranty information
  • Interactive iPod dock brochure
  • EZ Sync compatibility sheet
  • Important Notice Regarding Software booklet
  • Internet Radio Setup Guide
  • Instruction Manual Corrections
  • Using Satellite Radio instruction booklet
  • XM Channel Guide
  • Sheet of self-adhesive cable labels

Just sold my Denon 4306 and I can't believe how much better this is. The sound is smooth and natural and the OSD is a refreshing change.

Nathan, Salt Lake CIty, Utah


Onkyo TX-NR905 Reviews

Average Customer Review(s):

(11 Reviews)

3 Zones = Endless possibilities

TONY from Arkansas on 8/12/2008

I was skeptical at first when reading about all the heat that this unit produces. It does create a LOT of heat but there are ways around that. My main point in this review is do not overlook the possibilities of the 2nd and 3rd Zones that this unit supports. I've got the classical 7.1 set up with Boston Accoustics Speakers and they ROCK!!! However, I also set up the second zone to power 6 speakers in Zone 2. Yes you only get 5.1 surround when Zone 2 is turned on. I have 4 Atruim 45's and 2 Bose FreeSpace 51's around the of the pool. These are all hooked up to a speaker selector with volume control. The Volume control is a must because even with all of these speakers hooked up to the unit, they are still LOUD! Now, with this unit, you can turn Zone 2 on and leave the rest off. Its almost like having 2 seperate units. You can turn Zone 1 (Main) on and watch the game inside while your woman is chillin out by the pool listening to the radio, Sirrius, XM, or HD Radio or whatever she wants. This unit is awesome! The upconversion is GREAT! Why wait for your cable provider to bring out HD Channels when you can watch them all in 1080P now. Would be interesting to see how others use the different Zones. One thing to add, Zone 2 is powered 140w per Channel X2 and Zone 3 is passive meaning you'll have to get an external amp to run it. However with Zone 3, you get to keep your 7.1 even while Zone 3 is on.



Best receiver for the money. PERIOD

John from Seatte, WA on 7/15/2008

Crutchfield Customer Review (What's this?)

I've only owned older 100 watt Yamaha and 120 watt Sony's. around 3 bills for each. Polk Audio speakers all they way. I bought a pair of the Polk Atrium 60's (from Crutchfield of course) and had them hooked up to my 120 watt Sony. Poor Sony...3/4 volume and it sounded muddy and started clipping. BUY THIS NOW! The XM and Sirius and HD are also awesome I can't wait to hook up the Sonos system to this and rock the house! So the Atrium 60's are not on my deck yet and good thing for the neighbors! This ONKYO can blast! LOUD CLEAR and amazing sound from this amp. Hooked up my other Polks 2 rt3 bookshelf and rt 5 sweat just amazing sound BUYYYYY IITTT!!! you won't be sorry...unless you have junk speakers of course...So now I'm looking to upgrade to the Polk LSI series from crutchfield so I can really enjoy the sound of music. crutchfield...




Dean from Houston, TX on 6/8/2008

Crutchfield Customer Review (What's this?)

It does upconvert the video but it's not going to transform your VCR tapes into a blue-ray picture. It does however make your standard DVDs look awesome! It does an ok job with my standard def satellite picture. It also gets very hot under normal operation. I've got a small fan sitting on top to solve that problem. You better have a sturdy shelf to support it too! You will however forget about these small negatives when you crank this up!! Super loud clear detailed sound like you've never heard before! (I have Infinity Beta series speakers) I've put my entire cd collection on a 1TB Western Digital external hard drive and have it plugged into the USB jack on the NR905 and I never have to leave my chair! How cool is that! As usual Crutchfield was awesome. Now quit reading this and buy it!!



Great Reciever

James from Lemoore, CA on 5/25/2008

For the price you pay this is probably the best deal. Especially for a THX Ultra2 certified reciever that has both Dolby and DTS HD decoders, ethernet, hook ups for XM and Sirius, usb and an HD radio tuner. I have it hooked up with Ifinity Primus P162 (x6), PC350 (center ch) and P210 sub and it sounds great. Like the other reviews mention it does run pretty hot so make sure it gets plenty of ventilation. Other than that I would recommend it to anyone looking for a "future proof" reciever.



bad video from onkyo

tom from milltown nj on 5/18/2008

Crutchfield Customer Review (What's this?)

very poor video useing hdmi on onkyo 905 very grainy and distorted



Well worth the money

Barry from Orlando, Florida on 5/10/2008

Crutchfield Customer Review (What's this?)

This receiver replaced my old SR803S, and has a done a phenominal job with the upconvert. The 1080i shows truely look as if they are coming through via blu-ray, and when I switch sources (cable/blu ray/etc) it is one button I have to push. On the old unit, I had to change the mode on the receiver, and the tv depending on which type of input was used. Now, if I were to hook up a video game system, a vcr, it would only take the one button, plus upconvert. I have seen no issues as claimed below with the black levels. The built in HD radio is also very nice, as the commercials say, it's your regular radio, and then some. There are receivers that make sound, then there are receivers that produce real nice sound, then there are receivers that not only offer the best in sound quality, but enhance your video / viewing experiences as well. This is it, and Onkyo is the only company I will now purchase.



Great Receiver

Ray from Lake Forest, CA on 2/19/2008

Crutchfield Customer Review (What's this?)

I just purchased the TX-NR905S to replace my old (7 years) but still fully functional Onkyo TX-DS989. The main reason was to get the advanced codecs. The unit performs flawlessly. I have not seen any of the audio delays people have discussed in different forums. The Reon HQV scaling makes watching my old SD DVD's a new experince. The Audyssey MultEQ XT auto setup helped fine tune my 7.1 system. At the price point the 905 is at you'll be hard pressed to find an equal.



Love It !!!

Nathan from Salt Lake CIty, Utah on 1/28/2008

Crutchfield Customer Review (What's this?)

Just sold my Denon 4306 and I can't believe how much better this is. The sound is smooth and natural and the OSD is a refreshing change.



WOW!!! (continued)

Robert from Lansing, MI. on 11/3/2007

Crutchfield Customer Review (What's this?)

I have looked for an HD DVD player that works with the trueHD on this Onkyo and can send digital signals through the HDMI interface. Currently, the Onkyo website says there is not one out there, but there is one and only one that I have found. I bought and returned HD DVD players for the last two months trying to get the trueHD to display on my Onkyo 905. The one HD DVD player that will do this is the Toshiba HD-A35. Enjoy!!!



Onkyo 905

Tommy from SC on 10/26/2007

If you use the 905 through the Reon processor it severely alters your black levels. The only way to get the black levels back on your display is to set the unit to through (with not Reon upconversion) and turn the OSD off.




Robert from Lansing, MI. on 9/13/2007

Crutchfield Customer Review (What's this?)

Crutchfield got my order on a Monday about 11:30am and this TX-NR905S was sitting in my living room by 2:00pm Wednesday. The black model picture is posted for some reason, but I must say the silver model is an awesome looking unit; very classy design. There is no model at this price point from any manufacturer that can compare to this model. Even the $4,000 Denon can't touch this model. THX and the newest HD processors means this unit will not be outdated too quickly.<BR><BR>My only complaint is the on screen programing is a separate page and blanks out the image. I like Denons GUI setup much better. You can set up the reciever and still have audio and picture. Hopefully Onkyo will update to a nicer GUI.




Hands-on research

Features and Specs

Number Of Channels 7
Stereo RMS Power (watts) 140
THD in Stereo 0.05 %
Frequency Bandwidth (stereo) 20-20k Hz
Minimum Impedance L/R 4 ohms
Minimum Impedance Center 4 ohms
Minimum Impedance Surround 4 ohms
General Features
Internet-ready ---
Bluetooth No
Apple AirPlay ---
Chromecast built-in No
DTS Play-Fi No
App Remote Control No
USB port for iPod/iPhone No
FM Sensitivity Not Given
HD Radio Tuner Y
On-Screen Display
Auto Speaker Calibration ---
HDCP 2.2 for 4K Video No
HDR-compatible No
HDMI Standby Pass-through ---
4K Video Upscaling No
HDMI to HDMI Upconversion ---
DLNA Certified
MHL-compatible ---
Multibrand Remote Control ---
Learning Remote Yes
LCD Remote
Width (inches) 17-1/8
Height (inches) 7-9/16
Depth (inches) 18-15/16
Weight (pounds) ---
Parts Warranty 2 Years
Labor Warranty 2 Years
Multi-room Audio--Video
Powered Multi-room Audio Output No
Preamp Multi-room Audio Output No
Multi-room HDMI Output No
Surround Processing
Dolby Digital Yes
Dolby Atmos N/A
Inputs & Outputs
Phono Input 1
Audio-Video Inputs 6
Audio-only Inputs 3
Component Video Inputs 3
Component Video Monitor Outputs 1
Optical Digital Inputs 3
Coaxial Digital Inputs 3
Optical Digital Outputs 1
Coaxial Digital Outputs None
HDMI Inputs 4
HDMI Monitor Outputs 2
Subwoofer Outputs 1
Discrete Subwoofer Outputs No
Multi-Channel Analog Input Yes
Multi-channel Preamp Output Yes
Main Speaker Output Pairs 1
Main Speaker Terminals Posts
Ethernet Port 1
USB Connections 1
Removable Power Cord ---

Product Research

Network Ready
Remote Control
Input and Output Notes


7.1 Channel Amplifier: The Onkyo TX-NR905 features a 140 watt x 7-channel amplifier in 8-ohms at 20 to 20,000 Hz with a maximum total harmonic distortion of 0.05%.

WRAT (Wide Range Amplifier Technology): This technology uses low-negative-feedback circuit topology for accurate signal reproduction, improved dynamic signal-to-noise ratio, and better delivery of power peaks.

High Quality Transformers: The Onkyo TX-NR905 features a massive Toroidal transformer plus 2 separate transformers for audio and video processing.

Digital-to-Analog Converters (DACs): To decode and playback high-resolution recordings, this receiver is equipped with top of the line Burr-Brown 192kHz/24-bit DACs for all channels.

Vector Linear Shaping Circuitry (VLSC): Conventional D/A conversion methods reduce digital pulse noise at the conversion stage but can't remove it completely. Previously only found on Onkyo's high-end components, VLSC (Vector Linear Shaping Circuitry) employs a unique D/A conversion circuit to overcome this problem. Data is converted between sampling points and these points are joined with analog vectors in real-time to produce a smooth output wave form. The result is a virtually noiseless, smooth analog signal based on the digital source to bring out even the most subtle of nuances in your music, movie soundtracks and even MP3s.

Speaker Impedance: There is a menu adjustment for minimum speaker impedance. Options are 6Ω (for speakers 6 to 16-ohms) and 4Ω (for speakers 4 or 5-ohms).

Multi-Language On-Screen Display (OSD): An OSD can be displayed on your television for easy system setup. The joystick/enter button on the remote makes display navigation and setting adjustment simple and convenient. The setup OSD is passed through all the monitor outputs (composite video, S-video, component video, and HDMI). Once the system is setup, operation details (volume for example) are displayed on screen when using the composite or S-video inputs. Operation details are not displayed when watching a source using the component video or HDMI inputs. You can select a 4:3 or 16:9 aspect ratio for the monitor output so the menu is displayed properly to match your TV's screen. You can choose from the following languages for the receiver's on-screen display menu -  English, Spanish, French, German, Italian, Dutch, Swedish or Japanese.

Component Video Switching: In addition to composite and S-Video switching, this unit can switch between high resolution component video sources. There are 3 component video inputs and 1 component video monitor output. The component video inputs and outputs have a bandwidth of 100MHz.

HDMI Switching: The TX-SNR905 has four HDMI version 1.3a inputs and one HDMI version 1.3a output for connecting DVD players, HDTV set-top boxes, and other video components through the receiver to your TV or projector. The HDMI cables will pass digital audio and video. The HDMI inputs are compatible with DVI, so TVs and displays with a DVI input can be connected by using an HDMI-to-DVI adapter cable, along with audio cables. The receiver uses HDCP (High-bandwidth Digital Content Protection), so only HDCP-compatible components can display the picture. The HDMI inputs can accept and switch 480i, 480p, 720p, 1080i, and 1080p signals to a TV, monitor, or projector. Each of the HDMI inputs can be assigned to any of the five rear panel A/V inputs (DVD, VCR/DVR, CBL/SAT, GAME/TV, or AUX 1).

Video Upconversion Using HQV Reon-VX Technology: The Onkyo TX-NR905 utilizes HQV Reon-VX technology to convert interlaced video signals to progressive scan signals. The HQV Reon-VX chip provides the ultimate support for standard definition and high definition deinterlacing; 1080p reconstruction of film sources; filtering of jaggies and artifacts; and the reduction of random, "mosquito" and block (codec) noise. HQV Reon-VX also enables color region enhancement and the rendering of more than one billion colors. The Onkyo TX-NR905 will upconvert incoming analog composite video, S-video and component video signals to HDMI so you can connect all your video sources through the receiver and then to your TV via HDMI to give you the best picture quality possible. The receiver can also convert composite video and S-video signal to component if your television does not feature an HDMI input.

RIHD (Remote Interactivity Over HDMI): RIHD synchronizes RIHD-compatible displays and components for integrated control via HDMI connection and use of the receiver's IR remote control. RIHD provides the following integrated operations.

  • Control: this function allows CEC-standard-compatible equipment connected to HDMI and RIHD-compatible equipment to be operated together with the Onkyo receiver
  • Power Control: provides an electrical power link between the TX-NR905 and RIHD-compatible components through the HDMI connection and allows for those components to turn on or off with the receiver
  • TV Control: allows you to control the TX-NR905 from an RIHD-compatible TV that is connected via HDMI, currently compatible with Panasonic Televisions featuring EZ Sync

Built-In HD Radio: In addition the unit's analog AM/FM tuner, the Onkyo TX-NR905 features a built-in HD AM/FM tuner. HD Radio technology bring digital radio to conventional analog AM and FM radio stations with improved sound quality, better reception, and new data services. HD Radio technology provides CD-quality sound for FM stations and FM-quality sound for AM stations. In addition, FM HD Radio stations can transmit multiple programs on the same frequency by using multicast channels. HD Radio also features text data display which include station name, song title and artist name. HD Radio stations broadcast on the same AM and FM frequencies they've always used and you can receive them by tuning into your favorite station as normal. You can store them a presets just like standard AM and FM stations. If the current AM or FM station supports HD Radio technology, the receiver's display HD indicator will light up.

Satellite Ready: The Onkyo TX-NR905 features proprietary ports on the rear panel for XM and Sirius Satellite Radio connection. In addition to the following optional satellite tuners needed (sold separately), you will need a subscription to XM and/or Sirius Satellite radio. 

  • XM Satellite Radio Ready: The receiver can be connected to the optional XM Home Mini-Tuner and Home Dock (part # 700XMTUNPK, sold separately), allowing you to receive XM Satellite Radio through the TX-NR905. You can search XM radio stations by Channel, Category or Direct Tuning. You can also choose to display the following XM information on the receiver's display - Channel Name, Channel Number, Category Name, Artist Name or Song Title.
  • Sirius Satellite Radio Ready: The TX-NR905 can also be connected to the optional SiriusConnect Home Tuner kit (part # 607SCH1, sold separately), which allows you to receive Sirius Satellite Radio through the receiver. You can search Sirius radio stations by Channel, Category or Direct Tuning. You can also choose to display the following Sirius information on the receiver's display - Channel Name, Channel Number, Category Name, Artist Name or Song Title.

iPod Compatible: The DS-A1 or DS-A2 Remote Interactive Dock for iPod (item #'s 580DSA1 and 580DSA2) provide an interface between an iPod digital media player and Onkyo TX-NR905. Once the iPod is docked you can control basic functions such as volume control, play, stop, and skip via the Onkyo system's RI-compatible wireless remote control. The dock also charges the battery in the iPod, and allows you to view digital photos and video on an Onkyo home theater system.

Audyssey MultEQ XT: MultEQ XT is Audyssey's most powerful built-in solution for countering distortion in dedicated home theaters. This technology detects speakers, and then sets levels, delays and crossovers, as well as measuring room acoustics. Using the receiver interface, it takes up to 8 measurements around the listening area and uses high-resolution equalization filters for satellites and subwoofers. MultEQ XT covers both frequency response and time domain (where most of the problems lie) across the entire listening area. The results are immediately obvious - a clear, well-balanced and natural sound. With the supplied speaker setup microphone, Audyssey MultEQ XT can measure the number of speakers connected, their sizes, crossover frequencies, and distances from the listening position and calculate the optimal speaker settings for you automatically. The supplied microphone is approximately 1-15/16" in diameter, 7/8" tall, and has a 19-3/4' cable that plugs into the front of the receiver. There is a threaded insert on the bottom of the microphone so it can be mounted on a tripod for accurate listening position placement. If you wish to setup the speakers manually, you can follow the procedure for Speaker Configuration.

Speaker Distance: The distance from your listening position to each speaker can also be set manually. The front speaker distance can be set from 1 to 30 feet in 1-foot increments. The center and subwoofer settings can be up to 5 feet more or 5 feet less than the distance you set for the front speakers (30 feet max). The settings for the surround left, surround right, surround back left, and surround back right speakers are each individually adjustable, and they may be up to 5 feet more or 15 feet less than the distance you set for the front speakers (30 feet max).

Speaker Levels: You can manually adjust the level of individual speakers between -12dB and +12dB; -15dB to +12dB for the subwoofer in 0.5 dB steps.

Double Bass: You can increase the bass output by activating the Double Bass function. This function feeds both the LFE and left and right channel bass output to the subwoofer. Double Bass can be set only when the subwoofer is set to On and the front speakers are set to Large.

Crossover: The TX-NR905 has a built-in crossover for the speaker system. The crossover points are set separately for the front, center, surround, surround back, and subwoofer channels. The sub crossover options are 80(THX), 90, 100, and 120 Hz. The other channels can be set to Full Range, 40, 60, 70, 80 (THX), 90, 100, 120, 150, or 200 Hz. The center and surround speakers can also be turned off.

LFE Level and Filter Settings: You can set the level of the LFE channel individually for Dolby Digital, DTS and multichannel PCM sources. The level can be set to -20 dB, -10 dB or 0 dB. You can also specify the cutoff frequency of the LFE channel's low-pass filter which can be used to filter out unwanted hum. The LPF only applies to sources that use the LFE channel. You can select from the following low-pass filter frequencies - 80 Hz (THX), 90 Hz, 100 Hz, 110 Hz, or 120 Hz.

Equalizer: Using the receiver's built-in electronic 7-band equalizer, you can adjust the tone of speakers individually. You can adjust the following frequencies independently for all seven speakers in your system between -6 dB to +6 dB in 1 dB increments - 63 Hz, 160 Hz, 400 Hz 1000 Hz, 2500 Hz, 6300 Hz or 16000 Hz. You can also adjust the following frequencies of the subwoofer between -6 dB to +6 dB in 1 dB increments - 25 Hz, 40 Hz, 63 Hz, 100 Hz or 160 Hz.

THX Ultra2 Certified: THX surround technology was founded by George Lucas. THX utilizes stringent standards that ensure movies are reproduced in movie theaters and home theaters just as the director intended. The TX-NR905 offers the following THX surround modes:

  • THX Cinema: carefully optimizes the tonal and spatial characteristics of the soundtrack for reproduction in the smaller home-theater environment, can be used with 2-channel sources processed with other formats and multi-channel sources
  • THX Ultra Cinema: expands 5.1-channel sources for 7.1-channel playback by analyzing the composition of the surround source and optimizing the ambient and direction sounds to produce the surround back channel output
  • THX Surround EX: expands Dolby Digital and DTS 5.1-channel sources for 6.1/7.1-channel playback, especially suited to Dolby Digital EX sources
  • THX Music Mode: designed for use with music, expands Dolby Digital and DTS 5.1-channel sources for 6.1/7.1-channel playback
  • THX Games Mode: designed for use with video games and can expand a 2-channel and 5.1 channel source for 6.1/7.1-channel playback
  • Neural THX 5.1/7.1: Neural-THX Surround employs psychoacoustic frequency domain processing, which allows deliver of a more detailed sound stage, with superior channel separation and localization of audio elements. Neural THX 5.1 and Neural THX 7.1 modes can expand any 2-channel stereo source for 5.1 or 7.1 channel playback. It can be used with CD, AM/FM radio, XM Satellite Radio, cassette, TV, VHS, DVD and other 2-channel stereo sources, including video games.

Stereo, Dolby and DTS Listening Modes: This receiver incorporates a powerful and highly accurate 32-bit DSP processor and a wide variety of listening modes to bring you maximum enjoyment from your audio and video software. The listening modes include:

  • Direct: audio from the input source is output directly with minimal processing
  • Pure: In this mode the display and video circuitry are turned off, minimizing possible noise sources for the ultimate in high-fidelity reproduction.
  • Stereo: sound is output from the front left and right speakers and subwoofer
  • Mono: monaural sound is output from the front left and right speakers and subwoofer
  • Multi-channel: 7.1-channel analog input
  • Dolby Pro Logic II: expands any 2-channel source to 5.1 channels
    • Movie
    • Music
    • Game
  • Dolby Pro Logic IIx: expands any 2-channel source to 7.1 channels
    • Movie
    • Music
    • Game
  • Dolby Digital: decodes Dolby Digital soundtracks
  • Dolby Digital EX: decodes Dolby Digital EX or expands 5.1-channel Dolby Digital sources to 6.1 or 7.1-channels
  • Dolby Digital Plus: multi-channel audio format that supports up to 7.1 channels with 48 kHz sampling rate
  • DTS: decodes DTS soundtracks
  • DTS 96/24: decodes high resolution DTS 96/24 soundtracks
  • DTS-ES: decodes DTS ES soundtracks
    • Discrete
    • Matrix
  • DTS-HD High Resolution: multi-channel format supporting up to 7.1 channels with 96 kHz sampling rate
  • DTS-HD Master Audio: offers up to 7.1 discrete channels of digital audio with 48/96 kHz, up to 5.1 channels with 192 kHz sampling rate
  • DTS Neo:6: expands any 2-channel source to 6.1 or 7.1-channels
    • Cinema
    • Music
  • DSD: used with SACDs/ that feature mult-channel audio
  • TrueHD: delivers exceptional sound that is bit-for-bit identical to the studio master, unlocking the true high-definition entertainment experience on next-generation discs
  • Neural Surround: allows delivery of a more detailed sound stage, with superior channel separation and localization of audio elements for 5.1 or 7.1 multi-channel surround playback
  • XMHD:  provides 5.1-channel surround sound on select XM programming
  • Onkyo Original DSP Modes:
    • Mono Movie: suitable for old movies or other mono sources
    • Orchestra: for classical or operatic music
    • Unplugged: for acoustic instruments, vocals, and jazz
    • Studio-Mix: suitable for rock or pop
    • TV Logic: adds realistic acoustics to TV shows
    • All Ch Stereo: ideal for background music
    • Full Mono: all speakers output the same sound in mono
    • Theater-Dimensional (T-D): enjoy virtual 5.1 surround with two or three speakers (you can set the virtual surround imaging to Narrow or Wide)

Note: You can assign a default listening mode to each input source that will be selected automatically when you select each input source.

Combination Surround Modes: You to choose from the following combination surround modes:

  • Dolby Digital + PLIIx Music: uses the Pro Logic IIx Music mode to expand 5.1-channel Dolby Digital sources for 6.1/7.1-channel playback
  • Dolby Digital + PLIIx Movie: uses the Pro Logic IIx Movie mode to expand 5.1-channel Dolby Digital sources for 7.1-channel playback
  • DTS + Dolby Digital EX: expands 5.1-channel DTS sources for 6.1/7.1-channel playback, especially suited to Dolby Digital EX soundtracks that include a matrix-encoded surround back channel.
  • DTS + PLIIx Music: uses the Pro Logic IIx Music mode to expand 5.1-channel DTS sources for 6.1/7.1-channel playback
  • DTS + PLIIx Movie: uses the Pro Logic IIx Movie mode to expand 5.1-channel DTS sources for 7.1-channel playback

Dolby Pro Logic II & IIx Music Modes: While listening in the Dolby Pro Logic II or IIx Music format, there are three further enhancements you can adjust:

  • Panorama: broadens the front stereo image to the surround speakers to provide a wraparound effect, especially effective when there is limited output from the surround channels, panorama can be turned on/off in the menu
  • Dimension: allows you to move the sound field forward or backward
  • Center Width: allows you to adjust the width of the center channel

Center Image: In the DTS Neo:6 Music mode, the Center Image feature adjusts the output of the left and right channels relative to the center channel, allowing you to make the center channel more or less dominant as needed. This improves the image of the center channel, especially when the listener is off-center. Adjustment varies from 5 (nothing subtracted from the L/R channels) to 0 (L/R channel output is cut in half).

Re-Equalization Circuitry: Re-EQ (re-equalization) corrects a soundtrack with high frequency response that's too harsh, compensating for the fact that sound mixed for large theaters may sound too bright when played back through speakers in the home environment. This can be set to either On or Off.

Bass and Treble: You can adjust the bass and treble for the front speakers. You can boost or cut low-frequency (20Hz) sounds output by the front speakers from -10 to +10 dB in 2 dB steps. You can boost or cut high-frequency (20kHz) sounds output by the front speakers from -10 to +10 dB in 2 dB steps.

Late Night Feature: The Late Night feature limits the dynamic range of Dolby Digital recordings. Limiting the dynamic range makes it easier to find a volume that ensures the quiet sounds are not too quiet and the loud sounds are not too loud for night time listening. This allows you to comfortably listen to without the need to constantly adjust the volume to keep from waking family/neighbors. The choices are: Off, Low, and High.

Note: This feature only works with Dolby Digital Encoded software and the depth of the feature will vary based on the individual software package.

A/V Sync: When the picture is not perfectly synchronized with the sound, this receiver can delay the audio from 0-250ms, in 1ms increments.

IntelliVolume: The IntelliVolume setup function allows you set a volume correction value in the range of -12dB to +12dB, in 1dB increments, for each source to prevent large jumps in volume when switching from one source to another. This feature eliminates the inconvenience of manually readjusting the volume control each time you switch from a source with a weak signal to a source with a strong signal and vice versa.

Volume Setup: The receiver volume can be configured in the following ways:

  • Maximum Volume: prevent the volume from being turned too high by setting a maximum level for Zone 1, Zone 2 and Zone 3; specify any volume in the top half of the volume range
  • Power On Volume: specify the volume setting when the receiver is turned on for Zone 1, Zone 2, or Zone 3; specify any volume or Last to use the same level that was used when the receiver was turned off.
  • Headphones Level: set the headphone volume relative to the main volume, choose a level between -12dB and +12dB

Name Edit: You can enter a custom name for each individual input selector and radio preset for easy identification.

Bi-Amp Speaker Connections: The Front Left/Right and Surround Back Left/Right terminal posts can be used together to bi-amp a front pair speakers that support bi-amping, providing separate tweeter and woofer power feeds, giving you improved bass and treble performance. When bi-amping, the Front Left/Right terminal posts connect to the front speakers' tweeter terminals while the Surround Back Left/Right terminal posts connect to the front speakers' woofer terminals. During bi-amping, the receiver is able to drive up to a 5.1 speaker system.

Multi-room Capability: You can use three speaker systems with the TX-NR905 receiver - a surround-sound speaker system up to 7.1 channels in your main listening room (Zone 1), an audio/video stereo speaker system in a second room (Zone 2) and an audio only stereo speaker system in a third room (Zone 3). The zone 2 and 3 outputs allow you to enjoy one source in your main listening room, while other sources play in remote rooms. Depending on how you configure the receiver, using Zone 2 will require an additional monitor, amplifier and speakers, a set of powered speakers, or simply a set of non-powered speakers located in a remote location. You can connect the dedicated Zone 2 stereo AV RCA line outputs to a receiver/amplifier or powered speakers along with a monitor in one room while powering a 7.1-channel speaker system in the main room; the output level of the RCA line outs for Zone 2 and Zone 3 can be switched from fixed for variable, so they can be connected to an amplifier or powered speakers equipped with or without a volume control. You can also connect a pair of speakers to the receiver's dedicated Zone 2 speaker terminals and simultaneously power a 5.1-channel speaker system in the main room. When the Zone 2 speaker terminals are turned on, the Surround Back speaker outputs do not work. When the Zone 2 speaker terminals are off, the Surround Back speaker outputs work as normal. The Zone 2 speaker output volume setting can be controlled with the remote. Only analog sources can be played in Zone 2 or Zone 3. Zone 3 requires an additional amplifier and speakers or a set of powered speakers to listen to a different 2-channel stereo source in another room while still playing 2-channel audio in Zone 2 and multi-channel audio in your main room (Zone 3 does not offer speaker terminal connection).

Sleep Function: From the remote, you can set the unit to automatically turn off after as much as 90 minutes or as little as 10 minutes; choices are presented in 10-minute increments.

Display Dimmer: The display illumination includes the green alphanumeric display and a blue ring around the volume knob. You can dim the display as follows: Normal and Volume light on, Normal and Volume light off, Dim and Volume light off, and Dimmer and Volume light off.

Lock Setup: With this feature, you can protect your settings by locking the setup menus.

Network Ready

Network-Ready: The TX-NR905 network-ready receiver gives you access to digital music files (AAC, WMA, MP3, WAV) via an Ethernet network between the receiver and your computer. The receiver also enables you to access music files from a USB mass storage device or a portable audio player through the USB port on the TX-NR905's front panel. The network-ready receiver is compatible with Windows Media Connect or Windows Media Player (the TX-NR905 is Microsoft PlaysForSure certified), which enable the TX-NR905 to play DRM music downloads from Napster and CD quality files from MusicGiants. For internet radio, you can access stations that use MP3 or WMA streaming. You can enter URLs (including those for podcasts) directly into your computer's web browser, or you can enter them with your remote control. The TX-NR905's user-friendly interface lets you easily access and store your favorite channels.

Supported Audio Files: The AV receiver supports the following music file formats during Ethernet server and USB mass storage device playback.

  • MP3: MP3 files must be MPEG-2 Audio Layer 3 format with a sampling rate of 32 kHz, 44.1 kHz, and 48 kHz and a bit-rate between 32 kbps and 320 kbps. Variable bit-rate (VBR) MP3 files are supported.
  • WMA: WMA files must have the copyright option turned off. Sampling rates of 32 kHz, 44.1 kHz, and 48 kHz and a bit-rate between 48 kbps and 320 kbps and lossless DRM are supported by this AV receiver. Variable bit-rates (VBR) are supported.
  • WAV: WAV files contain uncompressed PCM digital audio. Sampling rates of 32 kHz, 44.1 kHz and 48 kHz and a bit-rate of 16 kbps are supported.
  • M4A: Sampling rates of 32 kHz, 44.1 kHz, and 48 kHz and a bit-rate between 16 and 320 kbps are supported. VBR files are also supported.

USB Mass Storage Device Requirements: The AV receiver supports USB devices that support the USB mass storage device class. USB devices formatted with the FAT16 or FAT32 files system are supported. Each folder may contain up to 500 music files and folders may be nested up to eight levels deep.

Note: USB digital audio signals are not output by the receiver's digital outputs when playing music files.

Server Requirements: The AV receiver can play digital music files stored on a computer or media server and supports the following technologies.

  • Windows Media Player 11
  • Windows Media Connect 2.0
  • UPnP AV-Compatible Media Server
  • DLNA-Compatible Media Server

Network Requirements: The AV receiver's Ethernet port supports 10Base-T. For best results, a 100Base-TX switched Ethernet network is recommended. Your router should support NAT (Network Address Translation) and DHCP (Dynamic Host Configuration Protocol). A shielded CAT5 Ethernet cable (straight-type) shot be used to connect the AV receiver to your home network.

Remote Control

Multi-brand/Learning Remote with Joy Stick Button: The supplied wireless remote is a multi-brand/learning remote. The remote is pre-programmed to operate Onkyo components. In addition, the remote is pre-programmed to operate other popular brands of equipment, including DVD players, CD players, TVs, VCRs, cable boxes, MD recorders/players, and satellite receivers. Also, the remote can learn up to 90 commands from infrared remotes of other components. A joystick button simplifies menu navigation and doubles as an enter button.

Macros: Three macros can be programmed to perform a sequence of actions with just one button press. Each macro button can perform up to 8 commands.

Input and Output Notes

Rear Panel:

  • HDMI Inputs/Outputs: This unit has 4 HDMI inputs and 2 HDMI outputs. The HDMI inputs are assignable to different input sources. The HDMI jacks support HDCP copyright protection. The HDMI circuit will accommodate a 1080p signal. The 2 HDMI outputs display the same video signal.
  • Assignable Digital Inputs: The TX-NR905 has 5 assignable digital inputs (2 optical/3 coaxial) allowing you to specify which input source is connected to which digital input jack.
  • Multi-Channel Input: The receiver is equipped with one set of 8 Channel RCA type inputs for use with outboard 5.1 and 7.1 channel decoders. There are RCA inputs for left front, right front, center, left surround, right surround, surround back left, surround back right, and subwoofer.
  • Speaker Terminals: There are color-coded binding post connectors for the left front, right front, center, left surround, right surround, left surround back, and right surround back speakers. The binding posts are not 5-way because a plastic collar prevents their use with spade lugs. The Zone 2 left and right speakers are also binding posts.
  • XM: This proprietary jack is for use with an optional XM Mini Tuner Home Dock.
  • Sirius: This proprietary jack is for use with an optional Sirius SureConnect Home Kit.
  • Ethernet: This port is for connecting the AV receiver to your Ethernet network for playing music files on a networked computer or media server or for listening to Internet radio.
  • IR Input/Output: The 3.5mm IR input jack allows you to control the receiver without line-of-sight access using an optional IR remote control system and locating the remote sensor in sight. The 3.5mm IR output jack allows you to send the control signals to an additional component.
  • RI Remote Control Jack: The 3.5mm RI (Remote Interactive) remote control jack allows you to connect this receiver to compatible Onkyo components.
  • 12 Volt Trigger: This 3.5mm mini-jack output can be connected to the 12-volt trigger input on a power amplifier in Zone 2. When Zone 2 is turned on, a 12-volt trigger signal is output.
  • RS-232C Port: The TX-NR905 has an RS-232C port for connection to external whole-house control systems from companies such as AMX or Crestron.

Front Panel: The unit's front panel connections are located behind a manual fold-down door.

  • Headphone Output: This receiver has a standard 1/4" headphone output on the front panel. The speaker outputs, except for the Zone 2 speakers, are muted when headphones are plugged in.
  • AV Aux Input: The receiver features a composite video and S-video inputs as well as Left/Right stereo RCA audio inputs on the front panel.
  • Digital Input: The receiver also features an optical digital input on the front panel.
  • USB Port: A USB mass storage device, such as a USB flash drive or MP3 player, containing music files (MP3, WMA, WAV, M4A) can be plugged into the receiver's front panel USB port and the music selected played through the AV receiver.
  • Setup Mic: This 3.5mm input on the front of the receiver is used to connect the supplied Setup Microphone.

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