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NAD Masters M66 BluOS Streaming DAC-Preamplifier

Not only is the Masters M66 BluOS streaming DAC-preamplifier the most advanced preamplifier NAD has ever offered, it represents an entirely new class of hi-fi separate components. In addition to a plethora of inputs, including MM/MC phono and HDMI eARC, the M66 incorporates an audiophile-grade DAC and a high-resolution multi-room music streamer.

Along with the full-bandwidth version of Dirac Live Room Correction, the M66 features Dirac Live Bass Control, allowing independent control of each connected subwoofer, for smooth, consistent response throughout your listening room. The combination of Dirac Live Room Correction and Dirac Live Bass Control enables the M66 to deliver more accurate in-room performance than any two-channel component ever offered.

With its elegant aluminum casework, super-smooth digital volume control, and vibrant 7″ touchscreen, the M66 exudes class and quality. Visually, sonically, and technologically, it’s an ideal match to NAD’s award-winning Masters M23 power amplifier. Of course, the Masters M66 BluOS Streaming DAC-Preamplifier can be paired with any high-performance amplifier.

Features & Details*

• Ethernet and Wi-Fi networking
• BluOS network streamer provides access to over 20 streaming services, including several that deliver lossless and high-resolution audio
• Flagship ESS Sabre ES9038PRO DAC and ES9822PRO ADC chips
• Innovative Dynamic Digital Headroom (DDH) circuit eliminates digital intersample peak clipping distortion
• Full MQA hardware decoding and rendering
• Support for Apple AirPlay 2, Spotify Connect, Tidal Connect
• Seamless integration with smarthome control systems such as Crestron, Control4, ELAN, RTI, URC, and others
• Support for Amazon Alexa and Apple Siri voice control
• Dirac Live Room Correction
• Four balanced and four unbalanced subwoofer outputs
• Dirac Live Bass Control enables seamless blend between the subwoofer(s) and main speakers, and smooth bass response throughout the listening area
• Ultra-quiet MM/MC phono stage with precise RIAA equalization, high overload margins, and infrasonic filter
• HDMI port with eARC support
• Two optical and two coaxial S/PDIF inputs, one AES/EBU balanced digital input, two pairs of RCA line-level analogue inputs, one pair of XLR balanced inputs
• Dedicated headphone amplifier with low output impedance and very high output voltage capability
• Ultra-precise resistor-ladder digital volume control
• 7″ front-panel touchscreen
• Elegant aluminium casework
• Two MDC2 expansion slots for adding future capabilities
• Premium IR remote control included
*all features and details listed are preliminary

PREAMPLIFIER SPECIFICATIONS

LINE IN, SINGLE-ENDED /ANALOG AUDIO OUTPUT

THD (20Hz – 20kHz)	<0.001% at 2V out
Signal-to-Noise Ratio	>105dB (IHF; A-weighted, ref. 500mV out, unity gain)
Channel separation	>116dB (1 kHz)
Input Impedance (R and C)	56 kohms + 100 pF
Maximum input signal	>5.6Vrms (ref. 0.1% THD) >8 Vrms (Analog Bypass)
Output impedance	Source Impedance + 22 Ohm
Input sensitivity	185mV (ref. 500mV out, Volume maximum)
Frequency response	±0.2dB (20Hz – 20kHz) ±0.2dB (Analog Bypass, 20Hz – 20kHz)
Maximum voltage output	-IHF load >5V (ref. 0.1% THD) >10 V (Analog Bypass, ref. 0.1% THD)
BALANCED IN, BALANCED /ANALOG AUDIO OUTPUT
THD (20Hz – 20kHz)	<0.001% at 2V out
Signal-to-Noise Ratio	>105dB (200 Ohm source; A-weighted, ref. 500mV out)
Channel Seperation	>116dB (1 kHz) >106 dB (10 kHz)
Input impedance	(R and C) 56 kOhms + 100 pF
Maximum input signal	>5.6 Vrms (ref. 1% THD) >8 Vrms (Analog Bypass, ref. 1% THD)
Output impedance Source Impedance	+ 22 Ohms
Input sensitivity	90mV (ref. 500 mV out, Volume maximum)
Frequency response	±0.2 dB (20 Hz – 20 kHz) ±0.2 dB (Analog Bypass, 20 Hz – 80 kHz)
Maximum voltage output (IHF load)	>10 V (ref. 0.1 % THD) >20 V (Analog Bypass, ref. 0.1 % THD)
DIGITAL SOURCE IN, SINGLE-ENDED /ANALOG AUDIO OUTPUT
THD (20Hz – 20kHz)	<0.0005% at 2V out
Signal-to-Noise Ratio	>108 dB (IHF; A-weighted, ref. 500 mV out, unity gain)
Channel separation	>126dB at (1kHz)
Input sensitivity	-20.25 dBFS (ref. 500 mV out (-6 dBV), max Volume
Frequency response	±0.2 dB (20 Hz – 20 kHz)
Maximum voltage output	-IHF load >5 V (ref. 0.1 % THD)
DIGITAL SOURCE IN, BALANCED /ANALOG AUDIO OUTPUT
THD (20 Hz – 20 kHz)	<0.0005% at 2V out
Signal-to-Noise Ratio	>108 dB (IHF; A-weighted, ref. 500 mV out, unity gain)
Channel Separation	>126 dB (1 kHz) >115 dB (10 kHz)
Input sensitivity	-26.25 dBFS (ref. 500 mV out(-6 dBV), max Volume
Frequency response	±0.2 dB (20 Hz – 20 kHz)
Maximum voltage output (IHF load)	>10 V (ref. 0.1 % THD)
LINE IN, SINGLE-ENDED/SUBWOOFER OUTPUT/2SUBWOOFERS
THD (20 Hz – 20 kHz)	<0.005% at 2V out
Signal-to-Noise Ratio	>84 dB (IHF; A-weighted, ref. 500 mV out, unity gain)
Output impedance	480 Ohms
Maximum voltage output	-IHF load >5 V (ref. 0.1% THD
BALANCED IN, BALANCED /SUBWOOFER OUTPUT/2SUBWOOFERS
THD (20 Hz – 20 kHz)	<0.005% at 2V out
Signal-to-Noise Ratio	>80B (IHF; A-weighted, ref. 500 mV out, unity gain)
Output impedance	480 Ohms
Maximum voltage output	-IHF load >10 V (ref. 0.1 % THD)
PHONO INPUT, SINGLE-ENDED /ANALOG AUDIO OUTPUT (Analog bypass)
THD (20 Hz – 20 kHz)	MM: <0.008% (ref. 2 V out) MC: <0.02% (ref. 2 V out)
Signal-to-Noise Ratio	MM: >82dB (A-weighted, ref. 500 mV out) MC: >75dB (A-weighted, ref. 500 mV out)
Input Impedance (R and C)	MM: 56 kohms + 100 pF MC: 100 ohms + 280 pF
Input sensitivity	MM: 1.7 mV (ref. 500 mV out, Volume maximum) MC: 123 μV (ref. 500 mV out, Volume maximum)
Frequency response	±0.2 dB (20 Hz – 20 kHz)
Maximum input signal at 1kHz	MM: >80 mVrms MC: >7 mVrms (ref. 0.1 % THD)
LINE INPUT, HEADPHONE OUT(Analog Bypass)
THD (20 Hz – 20 kHz)	<0.002% (ref. 1V out)
Signal-to-Noise Ratio	>98 dB (32 ohms loads; A-WTD, ref. 0.5V out, unity gain)
Frequency response	±0.3 dB (20 Hz – 20 kHz)
Channel separation	>62 dB at 1kHz
Output impedance Source	Z + 4.7ohms
Maximum input signal at 1kHz	MM: >80 mVrms
Power consumption	at Auto Standby ON and Network Standby OFF 0.5 W* at Auto Standby ON and Network Standby ON 2.0 W** OFF mode (Power switched OFF) 0.1 W
BluOS AUDIO
Supported audio file formats	MP3, AAC, WMA, WMA-L, OGG, ALAC, OPUS
Supported high- res audio file formats	FLAC, MQA, WAV, AIFF, MPEG-4 SLS
Sampling rate	up to 192 kHz
Bit depths	16 – 24
CONNECTION
Ethernet/LAN	Ethernet RJ45, Gigabit 1000 Mbps Wi-Fi Built In:Wi-Fi 5 (802.11ac), dual-band
Bluetooth Quality	Bluetooth 5.0 aptX HD
USB	Type A
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**
Supported Hi-Res Audio File Formats	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	SRM1 remote control
Streaming cloud services*	Tidal, Qobuz, Deezer, Spotify, Amazon Music HD, SiriusXM, LiveOne, HighResAudio, JUKE, Napster, Pandora, Presto Music.
Free internet radio*	TuneIn Radio, iHeartRadio, Calm Radio, Radio Paradise
GENERAL SPECIFICATIONS
Supports bit rate/sample rate	up to 24 bit/192 kHz
Frequency band	2.402G- 2.480G
Maximum transmit power (dBm)	7 dBm ± 2 dBm
Box size (H x W x D) ***	H.569 x W. 519 x D.258 mm
Gross weight	16.25 kg (35.8 bs)

NOTE

^{* – After 20 minutes of no user interface interaction and no active source input
** – With established wired or wireless network connection, wireless Bluetooth connectivity and no user interface interaction and no active source input for 20 minutes
*** – Gross dimension includes feet, volume knob and extended rear panel terminals}

NAD

NAD M66