Experience all your favorite movies, music, TV shows, and video games in wraparound, 360° sound. The TX-SR503 makes it possible by teaming up seven channels of high-current power with plenty of surround decoding options.

This receiver offers inputs and outputs to hook up plenty of gear like your DVD player, cable box, VCR, CD changer, and more. Component video inputs let you switch between high-resolution video sources like an HDTV tuner and a high-def video recorder with no loss of video quality. And the multibrand remote gives you easy control of your whole system.

The 'SR503 also lives up to Onkyo's reputation for quality receiver construction inside and out. Advanced digital-to-analog converters bring out all the nuances in your digital movies and music. And the sturdy, anti-resonant chassis and oversized internal components keeps your multichannel sound clear and dynamic at all times.

    Product Highlights:

    • 75 watts x 7 channels into 8 ohms (20-20,000 Hz) at 0.08% THD
    • Dolby® Digital EX, DTS-ES® and Dolby Pro Logic® IIx decoding
    • Wide Range Amplifier Technology
    • 192kHz/24-bit DACs for all channels
    • CinemaFILTER
    • component video switching: 3 in, 1 out (50MHz bandwidth)
    • digital inputs: 3 optical, 1 coaxial
    • 2 audio, 4 A/V (including 3 S-video, 1 front-panel, and one 5.1-channel) inputs
    • multibrand remote
    • 2 sets of main speaker outputs
    • banana plug-compatible speaker posts for all main-room speakers
    • high-current, low-impedance amp design
    • aluminum front panel
    • oversized power transformer, filter capacitors and heat sinks
    • no phono input
    • 30 AM/FM presets
    • 17-1/8"W x 5-15/16"H x 15-3/8"D
    • warranty: 2 years
    • Our 60-day money-back guarantee

    Receivers: Your ticket to sensational sound

    Your receiver powers your speakers and lets you connect and select your entertainment sources. But a great receiver does a lot more — it ignites your emotions. From the passion of a favorite musical artist, to the crossfire of a super-charged movie soundtrack, to the intensity and immersion of a fast-paced video game, your receiver is the key to experiencing and enjoying it in full.

    Onkyo TX-SR503 Reviews

    Average Customer Review:

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    Do you like clean, clear sound?

    Written By David, Santa Barbara, CA on Wednesday, March 15, 2006

    I just bought this Onkyo receiver after my 20 year old Luxman receiver died. I was considering a couple other receivers from Denon and Pioneer, but the price for this one was too good to resist. The setup was a bit complicated, but the manual is clear and thorough. The number of features and listening options is amazing. I'm playing it through a pair of Infinity 160 speakers, and they have never sounded better. The receiver's only weaknesses are the sort of features you would find on much more expensive models, so I have no complaints. Check the specifications to make sure that it fits your needs, and if it does, you won't find anything better at this price.

    Excellent value

    Written By Lee, Chapel Hill, NC on Thursday, January 26, 2006

    Crutchfield Customer Review (What's this?)

    This nifty receiver delivers the goods, all things considered. For $300, you get 7.1 sound, pretty good ergonomics, decent construction, and a reasonable amount of power. It is not a direct competitor to $1000 A/V units, nor was it designed to be. Are there things that could be better? Sure. I'd like to see gold-plated connections, and the menu selection of surround sound modes is a little different than with other receivers I've used over the years. Occasionally I'll hear popping sounds when my DVD player is switched on, but that could be the fault of the DVD player rather than the receiver. These are quibbles that have to be expected in a unit at this price point. If you are looking for competent performer for not a lot of money, this Onkyo will not disappoint.

    Insufficient for Home Theater

    Written By Lentomone, Madison, AL. on Sunday, January 22, 2006

    I bought an Onkyo TXSR503 and found out that it was not sufficient to run my 4 built-in front and rear surround speakers, center speaker, and powered subwoofer. The manual states that the "American Model" cannot accomodate any speaker systems less than 6 ohms. If you use speakers of a lower impedance and use the receiver at higher volume levels, the built-in protection circuit may be activated. When I had everything connected, my receiver kept cutting off just like it states and I did not have the volume very high. I am now looking for another receiver that will accomodate impedances lower than 6 ohms and has a higher power level. BEWARE! Or else you will be getting rid of this receiver like I am doing. Also keep in mind that two 8 ohm speakers connected [in a parallel circuit - Ed.] equate to a total impedance to the receiver of 4 ohms.

    Outstanding receiver

    Written By Dan, Birmingham, AL on Sunday, January 22, 2006

    After reading the reviews here on Crutchfield, and researching many other sites and many other brands, I chose this receiver. I have owned Sony receivers and my first instinct was to look at Sony's again. After speaking with local retailers and much online research, I threw Sony out. Denon and Onkyo kept coming up in all the conversations, reviews, blogs, etc... I compared the two, even side by side, and chose the Onkyo. After receiving it from Crutchfield in perfect condition, I found the manual to be easy to follow. After making all the connections and followed the setup instructions, I was amazed at the quality of sound this receiver had over my Sony's. I have Bose speakers as my surround, and a powered sub. I have a 12X15 room and although this receiver only has 75watts per channel, it is plenty for this room. The DTS sound modes are unbelievable. I ran a test DTS DVD that professional installers use, and the sounds blew me away. I played a CD of Wagner, and it blew me away too.
    There are more high end receivers out there for the true audiophile, and at a much higher price too. I'm not loaded with that kind of cash. This receiver fits the bill perfectly. It looks good with my other silver components as well.

    Exceptional Value!!

    Written By Steven, Jacksonville, Florida on Thursday, December 22, 2005

    Crutchfield Customer Review (What's this?)

    This wasn't my first choice, but boy am I glad went I with my second choice instead! I made the mistake of going to a national chain City to buy a Sony receiver (STR-DE598). The sales rep didn't really know anything about it, but said he though it was a good buy - right!! I got it home and fiddled with it for three hours...got frustrated, took it back and signed on to crutchfield.com that night and bought this Onkyo instead. It's got great sound, plenty of options, looks good...and talk about easy setup! The remote is great too!! I highley recommend this receiver, if you're looking for something that fits into a tight budget.

    P.S. I won't be visiting any more stores for A/V equipment!! Crutchfield is the way to go!! Thanks!

    Great performance for a great price!!!

    Written By Brian, Austin, TX on Monday, November 14, 2005

    Crutchfield Customer Review (What's this?)

    This thing is built like a tank and sounds like a dream. While I was doing my "homework" to build a new home theatre system, the Onkyo TX-SR503 quickly became the frontrunner. I've got my HD cable box and Samsung DVD running through it and it makes the video look REALLY good... it CAN handle a lot of digital vid info as well as the sound.
    Speaking of sound, it makes my Polk Audio speakers sound GREAT!! (CS1 center, Monitor 30 (frt. L & R), r15 (rear) and PSW10 sub) This was a joy right out of the box... easy set up, beautiful sound, looks good. Don't sweat the 75w per channel; I immediately cranked up "SW: Ep III" and it was just like being at the movies. (Even my wife noticed the difference from our old HT system)

    Onkyo TX-SR503

    Written By chaps, lake oswego, or on Thursday, November 03, 2005

    Crutchfield Customer Review (What's this?)

    The Onkyo TX-SR503 is probably the best receiver for the value. I had been shopping around for a while before I decided on this one and I would have to say that the right choice was made. The sound is great, setup was fairly simple and the value was unmatched when compared to other receivers with comparable options.

    Great Product and Excellent Value

    Written By Richard, Illinois on Monday, October 03, 2005

    Excellent sound and very easy set up. Lots of connections (input and output) made it possible to link together several components easily. Used my own speakers, which have never sounded so good! The Onkyo fills my family room with full, high-quality sound. No distortion noticeable, even at rather high volumes. The remote was easily programmable to operate my TV, CD changer, DVD player, and VCR in addition to the amplifier.

    Great Value! A steal!

    Written By Pedro, Puerto Rico on Sunday, July 24, 2005

    7.1 for $300.00! After looking at offerings from Denon and Yamaha I decided on the Onkyo. This has to be the best value in an AV receiver in the market right now. It is very easy to set up and fantastic sound for both, music and movies. The TX-SR503 has pretty much all the processing capabilities out there, short of THX. The included DSP modes are plenty and do not impart a lot of the gimmicky echoes and reverb or over equalization some other brands use in their DSP modes. Don't worry about the 75 watt rating, the high current amps sound cleaner and fuller than the 120 watt Sony it replaced.

    Associated equipment: Velodyne CHT satellites, Infinity HPS-1000 (15 in/1,000 watt) sub-woofer, Panasonic DVD player and 42 in Plasma.

    If you already have a DVD player and are considering a $600.00 HT in a box, forget it. Get the TX-SR503 and Polk's Audio RM6005, currently $299.99 down from $499.99, and you will have a much more capable system.


    Written By COREY, WALDORF, MD on Thursday, July 07, 2005

    Crutchfield Customer Review (What's this?)


    Hands-on research

    What's in the box?

    Download owner's manual

    • Silver AM/FM/Dolby Digital/DTS receiver
    • RC-607M Wireless remote control
    • 2 "AA" batteries
    • 1 AM loop antenna
    • 1 FM wire antenna
    • Instruction Manual (English)
    • Instruction Manual (French/Spanish)
    • "Remote Control Codes" booklet
    • Product Registration Card
    • Sheet of cable labels

    Product Research

    Remote Control
    Inputs and Outputs Notes


    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.

    192kHz/24-Bit Digital-to-Analog Converters: To decode and playback high-resolution recordings, this receiver is equipped with 192kHz/24-bit DACs on all channels.

    Multi-channel Input: Although this unit features built-in Dolby Digital, Dolby Pro Logic IIx and DTS processing, it also has a 5.1 multi-channel input for use with external multi-channel decoders.

    New Surround Modes: The Onkyo TX-SR503 features several combined modes using existing Dolby and Digital Theater Systems (DTS) surround modes:

    • Dolby Digital+Dolby Pro Logic IIx (Music and Movie): This mode uses the Dolby Pro Logic IIx decoder to create surround sound from Dolby Digital 2-channel material.
    • DTS+Neo:6: This mode uses the Neo:6 decoder to create 6.1-channel surround from DTS 5.1-channel material. It can be used with CDs and DVDs that bear the DTS or DTS 96/24 logo.
    • DTS+Dolby EX: This mode uses the Dolby EX decoder to create 6.1-channel surround from DTS 5.1-channel material. It can be used with CDs and DVDs that bear the DTS or DTS 96/24 logo.
    • DTS+Dolby Pro Logic IIx (Music and Movie): This mode uses the Dolby Pro Logic IIx decoder to create surround sound from DTS 3/2.1-channel material.

    Listening Modes: This receiver incorporates a wide variety of surround listening modes to bring you maximum enjoyment from your audio and video software. The surround modes include:

    • Dolby Digital EX
    • Dolby Digital
    • Dolby Pro Logic II
      • Music
      • Movie
      • Game
    • Dolby Pro Logic IIx
      • Music
      • Movie
      • Game
    • DTS
    • DTS-ES
      • Discrete
      • Matrix
    • DTS 96/24
    • DTS Neo:6
      • Cinema
      • Music
    • Dolby Digital+Dolby Pro Logic IIx
      • Music
      • Movie
    • DTS+Neo:6
    • DTS+Dolby EX
    • DTS+Dolby Pro Logic IIx:
      • Music
      • Movie
    • Onkyo Original DSP
      • Mono Movie
      • Orchestra
      • Unplugged
      • Studio-Mix
      • TV Logic
      • All channel stereo
      • Full Mono

    Basic Modes: This receiver has two basic listening modes, Direct and Stereo, for use with 2-channel sources. The Direct mode uses minimal signal processing to give you the purest sound possible. The Stereo mode is processed as a stereo signal and output to the front left and right speakers and the subwoofer.

    Adjustable Crossover: This receiver has a built-in crossover for the speaker system. This setting is available when you tell the receiver that there is a subwoofer being used, or when you set your front speakers to "Small." Depending upon the size of the drivers in the front speakers, you can choose from the following cutoff frequencies: 60, 80, 100, 120 and 150Hz.

    Audio Adjustments:

    • Double Bass: This function boosts the bass by feeding bass sounds from the front left and right channels to the subwoofer. This works well with mono and 2-channel sources, including 96kHz PCM.

    • Late Night (Dolby Digital only): You can reduce the dynamic range of Dolby Digital material so you can still hear quiet parts even when listening at low volume levels. Loud passages, such as explosions, are subdued, so as not to disturb others.

    • CinemaFILTER: This function can soften the harshness or brightness sometimes experienced with movie soundtracks, which are typically mixed for reproduction in a movie theater.

    Sleep Function: From the remote, you can set the unit to automatically turn off after a selected amount of time. You can choose from between 10 and 90 minutes in 10-minute increments.

    Display Dimmer: The display illumination can be set to dim, dimmer, or normal brightness.

    Remote Control

    Multibrand Remote (RC-607M): The supplied wireless remote is a multibrand remote. The remote is pre-programmed to operate Onkyo CD, DVD, MD, and cassette players. In addition, the remote is pre-programmed to operate other popular brands of equipment, including DVD players, satellite receivers, cable boxes, VCRs, and televisions.

    Inputs and Outputs Notes

    Assignable Digital Inputs: The TX-SR503 features 3 optical (Toslink) and 1 coaxial digital inputs. There are no digital outputs. Each input can be assigned to any input source.

    Headphone Output: This receiver has a standard 1/4" headphone output on the front panel.

    Speaker Outputs: There are color-coded binding post connectors for the left front A (white), right front A (red), center (green), left surround (blue), right surround (gray), left surround back (dark brown), and right surround back (light brown). The B speakers use spring clip connectors. The binding posts are not 5-way because a plastic collar prevents their use with spade lugs. A sheet of color-coded speaker wire labels is provided.

    RI Remote Control Jack: The 1/8" RI remote control jack allows you to connect this receiver to compatible Onkyo components.

    Multi-Channel Input: The receiver is equipped with a 5.1 multi-channel input for compatibility with 5.1-channel decoders. The input consists of left front, right front, center, left surround, right surround, and subwoofer RCA inputs.

    Our Product Research Team

    At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.