M33
M33
M33

M33

BLUOS® STREAMING DAC AMPLIFIER

Designed with purpose and precision, the M33 BluOS® Streaming DAC Amplifier delivers consistently clear, powerful sound, no matter the source. NAD’s implementation of Eigentakt™ amplification delivers effortless dynamics and tonal purity, revealing fine detail without added colour. With BluOS high-resolution streaming and Dirac Live room correction, the M33 offers control, flexibility, and exceptional sound – all in one beautifully built component. 

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KEY FEATURES

  • 200W per channel (8/4 Ohms) of HybridDigital Purifi Eigentakt™ amplification
  • ESS Sabre 9028PRO DAC delivers low noise and high dynamic range
  • BluOS™ platform supports 24-bit/192kHz streaming and MQA playback
  • Dirac Live® Room Correction included with optional full-bandwidth upgrade
  • Full-colour touchscreen with volume knob and app-based control options
  • Supports AirPlay 2, Spotify Connect, TIDAL Connect, and aptX HD Bluetooth
  • HDMI eARC input integrates seamlessly with TVs and media setups
  • MM/MC phono stage with precision A/D conversion for clean analogue playback
  • Dual subwoofer outputs, balanced/unbalanced inputs, and headphone output
  • Two MDC slots enable hardware expandability for future
    upgrades
Feature icon
Feature icon
MQA Decoding
Feature icon
Gray 'PURIFI' amplifier tech logo on a white background
Feature icon
DIRAC LIVE
Feature icon
Qobuz connect music streaming
Spotify logo with a play button icon on a white background

SPECIFICATIONS

Specification Details

AMPLIFIER SECTION
Rated output power (ref. 20 Hz-20 kHz at rated THD, both channels driven) >200 W into 8 ohms >380 W into 4 ohms
Rated output power, Bridge mode (ref. 20 Hz – 20 kHz at rated THD) >700 W into 8 ohms
Input sensitivity 865 mV (ref. 200W 8 ohms, Volume maximum)
THD (20 Hz – 20 kHz) <0.003 % (1W to 200 W, 8 ohms and 4 ohms)
Signal-to-Noise ratio >98 dB (A-weighted, ref. 1 W out in 8 ohms) >120 dB (A-weighted, ref. 200 W out in 8 ohms)
Clipping power >210 W (0.1 % THD 1 kHz 8 ohms)
IHF dynamic power 8 ohms: 260 W 4 ohms: 520 W
Peak output current ≥25 A (in 1 ohm, 1 ms)
Damping factor >800 (ref. 8 ohms, 20 Hz to 6.5 kHz)
Frequency response ±0.2 dB (20 Hz -20 kHz) -3 dB at 60 kHz

PREAMPLIFIER SPECIFICATIONS
Input Impedance (r and c) 47kΩ/180pF
Input Sensitivity 280mV (ref. 500mV out, Volume Maximum)
Maximum input level 20Hz-20Khz 2 Vrms/8 Vrms (low sensitivity mode)
Tone Controls Treble: ±6 dB at 10kHz Bass: ±6 dB at 100Hz
Max Output Signal 4Vrms (ref. 0.1% THD)
Maximum output level 3.9 Vrms (ref. 0.1% THD)
Signal-to-Noise ratio >120 dB (A-weighted, ref. 2 V out)
Output impedance 100 ohms
Maximum output level 1.1 Vrms (ref. 0.1 % THD 100Hz)
Signal-to-Noise ratio >102 dB (20 Hz-20 kHz, ref. 1V out)
THD+N <0.005 % (refer 1.1 V 20 Hz-200 Hz)
Output impedance 680 ohms
Input sensitivity MM: 1.2 mV MC: 100 µV
Input impedance (R and C) MM: 56 kohms/100 pF MC: 100 ohms/280 pF
Signal to noise ratio (ref. 2 V Preout A-weighted) MM: >92 dB MC: >76 dB
THD+N (ref 2V Preout 1kHz) MM: <0.003 % MC: <0.02 %
RIAA response accuracy MM/MC ±0.2 dB 20 Hz -20 kHz
Output Impedance 2.2ohms
Output power >100 mW/32 ohms

BluOS SECTION
Supported audio file format* MP3, AAC, WMA, OGG, WMA-L, ALAC, OPUS
Supported high- resolution audio file format* FLAC, MQA, WAV, AIFF
Sampling rate up to 192 kHz
Bit depths 16 – 24
Network connectivity Gigabit Ethernet RJ45 Wi-Fi 5
Supported network file share protocol Server Message Block (SMB)
USB 1 x Type-A port for connection to USB memory stick (FAT32 or NTFS formatted) and supported peripherals
Bluetooth quality Support for aptX® HD
Bluetooth connectivity Two-Way (Receive and Headphone modes)
Supported operating system** Music playback from network shares on the following desktop operating systems: Microsoft Windows XP, 2000, Vista, 7, 8 to current Windows Operating Systems and macOS versions**
Mobile Application Free BluOS Controller App available for download from the respective App stores of Apple iOS devices (iPad, iPhone and iPod), Android devices, Kindle Fire and Windows or macOS desktops
Front panel 7-inch full colour touch screen
Remote control HTRM 2 remote control

POWER CONSUMPTION
Auto Standby ON <0.5W
Idle Power <40W

DIMENSIONS AND WEIGHT
Dimensions WxHxD ** 435 x 133 x 396 mm (17 1/8 x 5 1/4 x 15 5/8 ”)
Net Weight 9.7kg (21.4lb)
Shipping Weight 18.4kg (40.6 lb)
Shipping Size (W x H x D) 569 x 258 x 519 mm (22 13/32 x 20 7/16 x 10 5/32 ”)

NOTE
*Specifications subject to change without notice.

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