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Connect Everything
With its full suite of analogue and digital inputs, the M66 can accommodate all your source components. Vinyl fans will appreciate the M66’s ultra-quiet MM/MC phono stage, which features precise RIAA equalization, high overload margins, and an innovative circuit that suppresses the infrasonic noise that is always present with vinyl playback without affecting bass response. For TV and movie viewing, there’s an HDMI eARC port for connection to an HDTV. Other options include two coaxial and two optical S/PDIF inputs, an AES/EBU balanced digital input, two pairs of RCA line-level analogue inputs, and one pair of XLR balanced inputs.
In addition to unbalanced RCA and balanced XLR outputs for connection to a power amplifier, the M66 has four unbalanced RCA and four balanced XLR subwoofer outputs. The M66’s dedicated headphone amplifier has very low output impedance and very high maximum output voltage, enabling it to drive demanding high-impedance studio monitor headphones. The M66 also has Bluetooth connectivity, with support for the AAC, LDAC, and aptX HD codecs.
Future Forward
The Masters M66 represents the pinnacle of what is technically achievable in a two-channel preamplifier today, and will maintain its technological leadership for decades to come. On the rear panel are two expansion slots that support MDC2, the latest generation of NAD’s Modular Design Construction future-proofing technology. As technology evolves, this will enable M66 owners to add new capabilities simply by inserting an MDC2 module into one of the slots.
Everything about the NAD Masters M66 BluOS streaming DAC-preamp is intended to inspire pride of ownership: the gorgeous 7″ touchscreen, the elegant aluminium casework, and the silky-smooth digital volume control. With its leading-edge technology, unmatched versatility, and superb build quality, the Masters M66 is truly a masterpiece of sound.
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)
- >106 dB (10 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)
- >115dB (10 kHz)
- 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
For supported music service and partners please see bluos.net
DIMENSIONS AND WEIGHT
- Box size (H x W x D) ***
- H.569 x W. 519 x D.258 mm
- Gross weight
- 16.25 kg (35.8 bs)
