In its simplest form, the M33 BluOS™ enabled DAC/amplifier is an ultra-high-performance streaming amplifier with superb audiophile sound. As a BluOS enabled component, the M33 can be combined with other players in a BluOS ecosystem of wirelessly networked music players throughout the home for an outstanding whole-home audio system. With the employment of the new Purifi Eigentakt™ Hybrid Digital amplifier technology, the M33 follows NAD’s long-standing tradition in identifying and developing cutting-edge amplification technology. With a minimum of 200W per channel on tap, the result is lifelike performance, exemplified by ultra-low distortion and noise.

FEATURES

BluOS Streaming DAC Amplifier
HybridDigital™ Purifi Eigentakt™ Amplifier Technology
Continuous Power: 200W into 8/4 Ohms
Dynamic Power: 300W into 8 Ohms, 550W into 4 Ohms
32-Bit/384kHz ESS Sabre DAC
Dirac Live Room Correction
Colour 7” TFT touch display
2 x MDC Slots for Future Expansion
Wireless control with Apple AirPlay 2 and aptX HD Bluetooth Integration
Comprehensive digital and analogue connectivity including MM/MC phono and HDMI eARC
Wide variety of music services integrated and supported by BluOS, including Tidal, Amazon Music HD, Deezer, Qobuz, Spotify and TuneIn – the world’s music is available at your fingertips
BluOS growing ecosystem of compatible brands that tightly integrate hardware and software for an exceptional user experience
BluOS apps for iOS, Android, MacOS, Windows
Seamless integration with leading smart home control systems including Crestron, Control4, RTI, URC, Elan, Lutron, iPort and others

TECHNICAL SPECS

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

LINE IN
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: ±10dB at 10kHz Bass: ±10dB at 100Hz
Max Output Signal
4Vrms (ref. 0.1% THD)

PREOUT
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

SUBOUT
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

PHONO
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

HEADPHONES
Output Impedance
2.2ohms
Output power
>100 mW/32 ohms

BluOS SECTION

AUDIO
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

CONNECTIVITY
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
aptX HD 5.0
Bluetooth connectivity
Two-Way (Receive and Headphone modes)

USER INTERFACE
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