NAD T748V2 (Factory Refurbished)
7.1-channel home theater receiver
Our take on the NAD T748V2 (Factory Refurbished) by Crutchfield's David Brown
Save on an outstanding home theater receiver
If you've invested in high-quality speakers for your living room or home theater, don't be content to drive them with any old receiver. Let NAD introduce you to the benefits of clean, low-distortion sound. Their T 748V2 is a 7.1-channel receiver made to do much more than simply get your music and movie soundtracks from point A to point B. This well-built receiver is designed not only to reveal every little detail in audio and video sources, but also to make sure nothing interferes with your ability to hear them. This factory refurbished model carries NAD's full warranty, so you can save with confidence.
One mission: pristine sound
Other receivers might boast higher power ratings than the T 748V2's 80 watts per channel in stereo mode. But NAD has long been more conservative with their specs, focusing on the quality of their amplifier power rather than going for big numbers. You can bet this receiver packs enough punch to drive even power-hungry speakers to room-filling volume without breaking a sweat. Plus, NAD designs their components to remain as faithful as possible to the original recording, eschewing rarely used features to preserve a clean signal path with ultra-low distortion levels. Less distortion means more clarity, so you hear more of your music and movies and less of what isn't supposed to be there.
Two assignable channels for a second room
With seven channels to play with, NAD has added one important feature over the previous version of this receiver. The "surround back" channels are reassignable. So if, like many people, you have five speakers in your home theater, you can power two additional speakers in a second room with the T 748V2. Or if you'd like to get more clarity from your front speakers, you can use those two extra channels to bi-amp your compatible fronts.
Customized presets for movies and music
All receivers are designed to perform double-duty for movies and music. This NAD receiver makes it easy to switch between a CD and a Blu-ray disc without having to reconfigure all your settings. The T 748V2 features five A/V presets which let you customize different functions for optimal playback. For instance, you may want to play movies from your Blu-ray player in 7.1-channel surround sound using your subwoofer for plenty of deep, rumbling bass. But perhaps you want to use only your front speakers and the sub for pop music. However, you'd prefer acoustic music to play only through your stereo speakers without the sub, though with a little bit of extra bass response courtesy of the receiver's built-in tone controls. With the T 748V2, you could create three presets to handle all of these situations with easy one-button selection.
Power and processing:
- 7-channel amplifier
- 80 watts per channel into 8 ohms (20-20,000 Hz) at 0.08% THD, with 2 channels driven
- Dolby® and DTS® surround sound decoding
- analog-to-HDMI video upconversion (up to 480p)
- auto speaker calibration for precise surround sound tailored to your room and setup (microphone included)
- dual-room/dual-source output
- "surround back" channels can be reassigned as powered Zone 2 outputs (allows 5.1 home theater in main room)
- line-level Zone 2 stereo outputs for use with a separate amplifier or powered speakers
- optical/coaxial digital and HDMI audio sources cannot be output to Zone 2
Audio Performance Features:
- bi-amp compatible front speakers by reassigning "surround back" channels
- streamlined design eliminates unnecessary features to prevent interference and degradation of sound quality
- 7.1-channel preamp outputs for connection to a separate power amplifier
- HDMI 1.4 audio/video switching: 4 in, 1 out
- 1 set of component video inputs
- composite video switching: 3 in (includes 1 front-panel input), 1 out
- 2 S-video inputs (includes 1 front-panel input)
- digital audio inputs: 3 optical (includes 1 front-panel input), 2 coaxial
- 4 analog stereo audio inputs (includes 1 pair of front-panel inputs)
- front-panel minijack input for connecting a portable music player or included setup microphone
- rear-panel input for optional iPod dock (not included)
- 7.1-channel preamp outputs includes output for a powered subwoofer
- outputs for 7 speakers (Front L/R, Center, Surround L/R, Surround Back L/R)
- no phono input to connect a turntable you'll need to add a phono preamp
- full-sized (1/4-inch) headphone jack
- RS-232C port for automated control systems
- remote control (IR) input
- detachable power cord
- 5 A/V presets for customizing sources, speakers, and settings for easy one-touch recall
- HDMI standby pass-through
- 3D pass-through
- on-screen display for easier system setup and operation
- AM/FM tuner with 60 presets and RDS for displaying station info
- 2 remote controls (Main and Zone 2)
- 17-1/8"W x 6-5/8"H x 16-1/2"D
- weight: 25.3 lbs.
- warranty: 2 years
- Our 60-day money-back guarantee
What's in the Box:
- Refurbished 7.1ch AV receiver
- 6' AC power cord
- Auto calibration microphone
- Main IR remote control (AVR 4)
- Zone 2 IR remote control (ZR7) 2 "AA" batteries
- CR2025 Lithium battery
- AM loop antenna
- FM antenna
- Owner's manual CD-ROM
- Quick start guide
- Warranty information
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Features and Specs
Assignable 7-Channel Amplifier: The T 748 is rated using NAD's Full Disclosure Power; 40 watts continuous output x 7 channels with all channels running simultaneously from 20-20,000 Hz into 8Ω loads with no more than 0.08% THD. The stereo output is 80 watts continuous x 2 channels under the same conditions. The seven amplifier channels built into the receiver are typically used for 7.2 channel surround in the main room, but there are various amplifier configurations to accommodate your home theater setup.
- 7.1ch: Provides 7.1ch surround (with front left/right, center-channel, surround left/right, and surround back left/right channels along with a preamp subwoofer output) in your main zone.
- Bi-Amp: You can configure the amplifier for front bi-amp operation to achieve a higher-quality 2-channel sound by connecting the receiver's front and surround back channels to your main front speakers (if compatible). In this configuration, the receiver will be limited to 5.2ch surround.
- Zone 2: The surround back channel amplifier can be reassigned to power stereo speakers in Zone 2. The receiver will be limited to 5.2ch surround in the main zone.
Note: NAD uses Full Disclosure Power (FDP), the most demanding criterion for performance measurement. FDP specifies distortion under the most extreme conditions of low impedance loads and frequency extremes, rather than the simple and easy 1kHz @ 8 ohms test quoted by many of other manufactures. NAD uses this stricter performance criterion because it more closely matches the demands of real music and real loudspeakers. Maintaining specified distortion at 4/8Ω and at 20-20kHz is a much more difficult achievement. The benefit of NAD's Full Disclosure Power is the total elimination of audible distortion at any listening level. This provides pinpoint imaging and realism with music and movies alike.
Auto Calibration: The auto setup and calibration feature uses the included microphone, along with sophisticated digital electronics to automatically setup and calibrate the T 748 to the exact speakers and speaker placement of your unique home theater. The receiver automatically checks what speakers are connected, measures and adjusts each speaker's distance (delay time), relative level (volume), and size (crossover point). The speakers can also be adjusted manually if you prefer.
Listening Modes: The T 748 offers decoding for all the latest surround formats including Dolby Digital, Dolby TrueHD, Dolby Digital Plus, DTS, and DTS-HD Master Audio; as well as Dolby Pro Logic surround processing.
- Dolby Digital: Dolby Digital, Dolby, Digital EX, Dolby Digital Plus, Dolby TrueHD
- DTS: DTS, DTS-ES, DTS-HD Master Audio, DTS-HD High Resolution, DTS Express, DTS 96/24, DTS Neo: 6
- Dolby Pro Logic: Dolby Pro Logic II, Dolby Pro Logic IIx
Note: Dolby Digital and DTS listening modes can only be selected if your audio source is connected to the A/V receiver via a digital audio connection (HDMI, optical, or coaxial). To enjoy true 7.1ch Dolby Digital TrueHD and DTS-HD surround sound, the receiver must be connected to your Blu-ray player via HDMI.
Listening Mode Parameters: The T 748 provides the following Listening Mode Parameter adjustments for Dolby Pro Logic IIx and DTS NEO:6.
- Center Width (DPL IIx): Modifies the "hard-centeredness" of the center image, by gradually mixing mono center content to the Front left/right speakers as well. A setting of 0 retains the center-channel-only default while a setting of 7 yields a fully phantom center channel.
- Dimension (DPL IIx): Adjusts front-rear emphasis of the surround effect independently from the relative channel levels.
- Panorama (DPL IIx): Adds a "wraparound" effect by extending some stereo content into the surround channels.
- Center Gain (DTS NEO:6): Adjust for better center image in relation to the surround sound channels.
EARS: Two-channel recordings, whether stereo or surround-encoded, are reproduced with proprietary NAD surround processing with signals output to the front left/right, center and discrete left/right surround channels, plus subwoofer. EARS extracts the natural ambience present in nearly all well-produced stereo recordings. It does not synthesize any ambience or other sonic elements and thus remains truer to the sound of the original musical performance than most other music-surround options. EARS offers realistic, stable "front-stage" sonic imaging and spacious but unexaggerated ambient "virtual acoustics" that remain faithful to the original recording. Select EARS for listening to stereo music recordings and broadcasts. EARS produces a subtle but highly natural and believable ambience from nearly all "natural-acoustic" stereo recordings. Typically, these include classical, jazz, and folk genre.
Stereo Modes: The NAD T 748 also provides two-channel stereo and multi-channel stereo playback, as well as an analog bypass stereo mode.
- Stereo: All output is directed to the front left/right channels. Low frequencies are directed to the subwoofer if one is present in the Speaker settings. Select 'Stereo' when you wish to listen to a stereo (or monaural) production, such as music CD or FM broadcast, without surround enhancement. Stereo recordings whether in PCM/digital or analog form and whether surround-encoded or not encoded, are reproduced as recorded. Multi-channel digital recordings (Dolby Digital and DTS) are reproduced in "Stereo Downmix" mode via the front left/right channels.
- Enhanced Stereo: All recordings are reproduced in stereo via the maximum speaker complement. Enhanced stereo can be useful for maximum volume from all channels or for multi-speaker background music (cocktail party) listening. For this mode, Front, Center, Surround and Back speakers can be turned ON/OFF as desired.
- Analog Bypass: All analog signals remain in the analog domain without analog-to-digital conversions. At Analog Bypass, the DSP circuitry is bypassed but full tone control functions remain. 'Bass management' or Speaker settings are also not in effect as these are DSP functions.
Audio Settings: The NAD T 748 offers a variety of audio adjustments to tailor the unit to your preference.
- Tone Controls: Bass & Treble can be adjusted from -10dB to +10dB.
- Enhanced Bass: When the subwoofer is set to 'On' and your front speakers set to 'Large', the option 'Enhanced Bass' becomes available. Normally, with speakers set to 'Large' the subwoofer is not active. The Enhanced Bass option allows full range operation of the speakers with the additional bass contribution of the subwoofer. This feature is particularly useful when one wants to experience maximum bass output.
- Dynamic Range Control: You can select the effective dynamic range (subjective range from soft to loud) for playback of Dolby Digital soundtracks. For fully cinematic effect, always select 100% (the default). Settings of 75%, 50%, and 25% progressively reduce dynamic range, making soft sounds comparatively louder while limiting the peak loudness of loud ones.
- Gain Adjustment: Gain adjustment allows all sources to play back at the same volume level so you don't need to adjust the volume every time a new source is selected. It is generally preferable to reduce the level of the loudest source rather than making louder the softer sources.
Audio Inputs/Outputs: The NAD T 748 offers a variety of analog and digital audio inputs/outputs.
- Analog Inputs/Output: There are four analog audio inputs (3 rear/1 front) and one record output. There are three stereo RCA inputs and stereo RCA output on the rear-panel, plus a single 3.5mm stereo minijack input on the front panel.
- Digital Inputs: There are two coaxial digital inputs and three optical digital inputs (2 rear/1 front)). The inputs accept digital audio signals from a digital TV, Set top box, Blu-ray player, compact disc, DVD, LD, or other digital source components; each can be assigned to a specific source using the on-screen menu.
- 7.2ch Preamp Outputs: The T 748 features Front left, Front right, Center, Surround left, Surround right, Surround Back left, Surround Back right and Subwoofer preamp outputs to connect the receiver to external power amplifiers. The Surround Back preamp outputs can also be used for Zone 2.
- Speaker Terminals: The receiver has binding post speaker terminals for the front, center, surround, and surround back channels. The surround back speaker channels can also be used for Zone 2 speakers. The binding posts can accept bare wire, pin connectors, and single banana plugs. The terminals are spaced too far apart for dual banana plugs and a collar surrounding the terminals prevents the use of spade connectors.
- Headphone Output: The receiver features a 1/4" stereo headphone jack on the front-panel for connecting an optional pair of headphones. The unit's speaker outputs are automatically muted when a set of headphones is connected.
HDMI Inputs/Output: The NAD T 748 receiver is fitted with four HDMI (v.1.4) inputs and 1 HDMI (v.1.4) output to deliver crystal-clear, all-digital audio and video signals. The HDMI 1.4 jacks support 1080p video signals; as well as 3D video, Auto Lyp-Sinc, and ARC functionality. The AV receiver's HDMI jacks support 2-channel and multi-channel linear PCM (up to 8-channel) and Bitstream (Dolby Digital, DTS, etc) digital audio formats.
- ARC (Audio Return Channel): HDMI (1.4) also features an Audio Return Channel, which allows both audio and video content to be sent through a single HDMI cable. This eliminates the need for separate audio and video cables running from your TV to the receiver.
- 3D Pass-Through: With the advent of 3D media, it is important to own a receiver that passes 3D video signals. The T 748 is able to pass 3D signals from your Blu-ray player to your TV via the HDMI connection.
- HDMI Pass-through: When the T 748 is in standby mode (power off), the HDMI source signals will continuously pass through the receiver to the TV. The HDMI Control (CEC) feature must be enabled in order for HDMI Pass-through to work.
- Lip Sync Delay: Video signals may take longer to process than audio signals, depending on the connected video equipment. The audio signal can be delayed up to 120ms to synchronize with the video signal.
Analog Video Inputs: The T 748 offers Component, Composite, and S-Video inputs. These analog video inputs can be assigned to specific sources using the on-screen menu. There is one component video input. There are three composite video inputs (2 rear/1 front) and one composite video monitor output. There are two S-video inputs (1 front/1 rear).
Video Conversion: The T 748 takes each analog video input (composite video, S-video, and component video), digitizes it and sends it out through the HDMI monitor output (the S-Video input is also output through the composite video monitor output).
On-Screen Menu: The AV receiver's on-screen text-based menu provides quick information about your system's settings. You can easily make settings for your home theater system while viewing menus on the TV screen. These menu displays can be output to your TV via HDMI, Component, Composite, or S-video.
Zone 2: The Zone 2 feature allows you to set this receiver to reproduce separate analog input sources in the main zone and the second zone (Zone 2). The receiver has dedicated stereo RCA outputs for Zone 2, or the receiver's Surround Back channels can be configured to power speakers in the second zone. By using the RCA outputs on the AV receiver you can connect an external receiver or integrated amplifier in a second room, allowing you to listen to 7.1ch surround in the main room and play a different stereo audio source in another room of your home. By using the speaker-level outputs on the AV receiver you can directly connect a secondary pair of speakers in another room of your home, allowing you to listen to 5.1 surround sound in your main room and play a different stereo audio source in the other room. When the receiver is powering speakers in Zone 2, the surround back speakers in the main room are turned off (limiting you to 5.1ch in the main room). The volume of Zone 2 can be controlled by the NAD receiver using either configuration or from your add-on integrated amplifier when using the line-output.
- Compatible Zone Sources: Analog audio inputs, AM/FM Tuner (you cannot select different AM/FM radio stations for each zone)
- Incompatible Zone Sources: Optical/coaxial digital and HDMI audio sources are not output to Zone 2. You cannot output any video signal to Zone 2.
RDS AM/FM Tuner: The NAD T 748 features an internal AM/FM tuner that offers high-quality sound from your local radio broadcasts. You can store up to 30 FM and 30 AM station presets. The Radio Data System (RDS) permits sending small amounts of digital information using conventional FM radio broadcasts. The T 777 supports two RDS modes; Program-Service Name (PS mode) and Radio-Text (RT mode). Not every FM station incorporates RDS in its broadcast signal. In most areas you will find from one to several RDS-enabled stations, but it is by no means impossible that your favorite stations will not be broadcasting RDS data
A/V Presets: Five A/V presets can be stored with customized settings for listening mode, DSP options (lip sync delay), tone control, speaker setup, and front panel display.
Optional iPod Dock: The optional IPD 2 iPod dock is no longer available.
Auto Power Down: The T 748 can be setup to automatically go to standby mode if there is no user interface interaction within the allocated time (4hrs, 8hrs, or 30 mins).
Dual Remotes: The T 748 includes an IR remote (AVR 4) for wireless operation of the AV receiver and other NAD audio/video components. The included Zone 2 IR remote (ZR 7) controls the Zone 2 features of the T 748; it allows control of the Zone 2 volume and source selection, as well as other applicable functions. The ZR 7 remote will work from a different room using an IR sensor and hub, or the IR sensor of a compatible NAD component in the second zone (either must be wired back to the location of the T 748).
HDMI-CEC: The NAD AV receiver supports the HDMI control function, which allows you to operate external components via HDMI. If your TV or other external components support HDMI control, you can use the remote controls of those devices to operate some of this unit's functions, and to synchronize this unit with the operation of those devices. You can use the following operations with the remote control of any of the connected HDMI Control compatible devices.
- Power synchronization (On/Standby)
- Volume control, including Mute
- Changing the volume of the audio output signal device (either the TV or the receiver)
Remote Connections: The NAD T 748 is fitted with the following custom remote inputs/outputs.
- IR In: The 3.5mm IR In allows you to connect the T 748 to an infrared repeater.
- RS-232C: The RS-232C port is to be used in conjunction with an external controller; AMX, Crestron or a compatible PC using NAD's proprietary PC software.
Switched AC: The maximum output on the 2-prong switched AC outlet on the rear panel is 100 watts/1 amp.
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