NAD Masters Series M32 DirectDigital D/A integrated amplifier Specifications

Sidebar 1: Specifications

Description: Remote-controlled, network-connected D/A integrated amplifier. Standard: Analog inputs: 2 pairs RCA (line), 1 pair RCA (phono). Digital input: USB Type B. Analog outputs: 1 pair unbalanced (RCA), 1¼" stereo headphone jack, 4 pairs speaker binding posts. Digital outputs: 1 TosLink, 1 coaxial S/PDIF. Optional modules included on review sample: MDC DD S/PDIF provides AES/EBU, 2 TosLink, 2 coaxial S/PDIF; MDC DD-BluOS provides Bluetooth, Ethernet, 2 USB Type A. Supported file formats: MP3, AAC, WMA, OGG, WMA-L, FLAC, ALAC, WAV, AIFF, MQA. Supported cloud services: Classics Online, Deezer, HDtracks, HighResAudio, Juke, KKBox, Microsoft Groove (with OneDrive), Murfie, Napster, Qobuz, Slacker Radio, Spotify, Tidal, WiMP. Maximum continuous output power: >150Wpc into 8 ohms (21.8dBW) and 4 ohms (18.8dBW). Clipping power: 165Wpc into 8 ohms (22.2dBW). IHF dynamic power: 190W into 8 ohms (22.8dBW), 380W into 4 ohms (22.8dBW), 440W into 2 ohms (20.4dBW). Maximum output current: >18A. Frequency response: 20Hz–96Hz, 0.5dB at 192kHz sample rate. Channel separation: >90dB (ref. 10kHz at 1/3 rated power into 4 ohms). Signal/noise: >95dB (A-weighted, ref. 1W), >124dB (A-weighted, ref. 150W). Damping factor: 800. THD: <0.005% (20Hz–20kHz, 500mW-rated power, with AES17 and AP passive 20kHz LP filters). Power consumption: 40W idle, <0.5W standby.
Finish: Silver & Black.
Dimensions: 17.125" (435mm) W by 5.25" (133mm) H by 15" (380mm) D. Weight: 21.6 lbs (9.8kg) net, 40.7 lbs (18.5kg) shipping.
Serial number of unit reviewed: H69M3201215; "Designed and engineered in Canada, custom manufactured to NAD specifications in China."
Price: $3999, including MDC DD S/PDIF module; MDC DD-BluOS module, $399; MDC DD-HDMI-1 module, $299. Approximate number of dealers: 100. Warranty: 3 years, parts & labor.
Manufacturer: NAD Electronics International, 633 Granite Court, Pickering, Ontario L1W 3K1, Canada. Tel: (905) 831-6555. Fax: (905) 831-6936. Web:

NAD Electronics International
633 Granite Court
Pickering, Ontario L1W 3K1
(905) 831-6555

Scintilla's picture

Reviewing your test results, John, it is hard to argue this is a better solution than using an M51/C510 paired with a good-quality conventional amplifier. Your tests of the M51 noise-floor revealed approximately 21 bits of resolution and pairing that with a high-current, low noise class A-A/B power amp with a high S/N ratio looks like a significantly better solution to me. All you gain here is some convenience with BluOS and maybe the potential for in-built 2-channel Dirac processing on an MDC board. Frankly, I'd rather have my Krell delivering the current than this class-D amplifier and I think NAD has objectively taken a step backwards with this product vs. the now-discontinued M51. Booo.

Long-time listener's picture

I've had some problems trying to get good sound out of the M32. Yes, it is basically clean, detailed, and fairly balanced. It has a tendency toward a slight sense of hardness or graininess as you move higher in frequency, however. That tendency gets worse when you need to adjust the output for 4 ohm speakers too -- and both of my sets of speakers are 4 ohms. I can set it for 5 ohms, which is a slight improvement, but then the bass loses a little of its grip and I have to boost the bass a bit with the tone controls.

So it goes. I just feel that for a "highly recommended" amp in Class A, at this price, it should do just a bit better.

cundare's picture

There's an easy way to do this. Tell your head you're tapping in 12/8. The rhythm abruptly becomes obvious, like when a hidden Magic Eye 3D image snaps into place.

Long-time listener's picture