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NAD Electronics Masters M66 BluOS Streaming DAC/Preamplifier
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NAD Electronics Masters M66 BluOS Streaming DAC/Preamplifier

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$4,899.00

Estimated delivery on 3 August - 14 September, 2025
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Items Included

  • NAD Electronics Masters M66 BluOS Streaming DAC/Preamplifier
  • Remote Control
  • Calibration Microphone
  • Limited 3-Year Manufacturer Warranty
Key Features
  • ESS Sabre ES9038PRO DAC & ES9822PRO ADC
  • 7″ Built-In Touchscreen
  • Wi-Fi, Ethernet & Bluetooth Connectivity
  • Dirac Live Room Correction with Mic
  • Dirac Live Bass Control
  • 24-Bit/192 kHz Resolution & MQA Decoding
  • BluOS Streaming From 20+ Services
  • 4 Balanced & Unbalanced Sub Outs
  • MM/MC Phono with RIAA Equalization
  • 2 x MDC2 Slots for Future Expansion

With an audiophile-grade DAC, hi-res audio streaming, and a plethora of inputs; the NAD Electronics Masters M66 BluOS Streaming DAC/Preamplifier is NAD’s flagship preamp component. Pair the M66 with a NAD M23 power amp, or other high-performance amplifier, and active speakers for a top-of-the-line audio experience. Enjoy a wide dynamic range and ultralow distortion with the M66’s ESS Sabre DAC and ADC chips, while using Dirac technology for both room correction and independent bass control. Built-in hi-res network streaming supports a variety of formats, such as MQA, with resolution up to 24-bit/192 kHz from over 20 services or your own personal library. These features simply highlight the M66’s long list of capabilities, which can be expanded in the future using optional MDC2 modules.

Dirac Live Room Correction
Use the supplied calibrated microphone to record the sonic characteristics of your room, and have Dirac Live Room Correction automatically configure audio output to your space. This is designed to compensate for acoustic problems like standing waves and unwanted reflections.
Dirac Live Bass Control
Seamlessly blend your subs to your main speakers with Dirac Live Bass Control. It uses four balanced and four single-ended subwoofer outputs, providing independent control of each in order to deliver a more accurate performance.
Dynamic Digital Headroom
DDH (Dynamic Digital Headroom) circuitry within the M66 is activated from the BluOS app, working to eliminate digital inter-sample peak clipping distortion, which is most noticeable when listening to percussion-heavy music.
Analog Direct Mode
Bypass digital processing with Analog Direct Mode. This mode separates analog and digital sources, shielding them internally with their own power supplies. This function helps to minimize distortion from digital interface.
Connect Everything
The rear of the M66 is jam-packed with inputs for connecting a wide range of sources. Vinyl fans will enjoy the MM/MC phono input with precise RIAA equalization, high overload margins, and infrasonic noise suppression. HDMI eARC is available for TV and movie viewing, while music and other media can be connected via two coaxial, two optical S/PDIF, an AES/EBU balanced digital input, two pair of RCA line-level analog inputs, and a pair of XLR balanced inputs.
Additional Features
  • Multi-room playback with support for up to 63 Blu-OS-enabled components
  • Built-in 7″ touchscreen
  • Digital volume control
  • Wi-Fi, Bluetooth, and Ethernet connectivity
  • Voice control with Alexa or Siri
  • Roon Ready
  • Integrates with Control4, Crestron, ELAN, RTI, URC & more
  • Dedicated high-impedance headphone amplifier
  • Aluminum chassis
Category:
Channels
2.0
Wi-Fi
Wi-Fi 5 (802.11ac)  
Bluetooth
5.0
Amplifier
Amplifier Type
Preamplifier
Channels
2.0
Frequency Response
20 Hz to 20 kHz ±0.2 dB
20 Hz to 20 kHz ±0.3 dB
Channel Separation
> 62 dB (1 kHz)
> 116 dB (1 kHz)
> 106 dB (10 kHz)
> 115 dB (10 kHz)
> 126 dB (1 kHz)
Audio Processing
Supported File Formats
AAC, AIFF, ALAC, FLAC, MP3, MPEG-4 SLS, MQA, OGG, OPUS, WAV, WMA, WMA-L
Supported Sample Rates
Up to 192 kHz / 24-Bit
Connectivity
Rear A/V Inputs
1x Mono XLR
2x Optical TOSLINK
2x Digital Coaxial
1x HDMI
1x Stereo RCA (Phono MM) with Ground Screw
1x Stereo RCA (Phono MC) with Ground Screw
Rear A/V Outputs
4x Mono XLR Subwoofer
4x RCA Subwoofer
1x Stereo RCA
1x Stereo XLR
Front I/O
No
Other Rear I/O
1x USB-A Input/Output
1x RJ45 (Ethernet) Input/Output
1x Micro-USB (Service)
1x DE-9 (RS-232C) Input
1x 1/8″ / 3.5 mm (IR) Input
1x 1/8″ / 3.5 mm (12 V Trigger) Input
2x 1/8″ / 3.5 mm (12 V Trigger) Output
1x Bluetooth Coaxial F-Type Input
1x Wi-Fi Coaxial F-Type Input
HDCP Support
Yes
Audio Return Channel (ARC)
eARC
HDMI CEC
Yes
Input Impedance
Line, Phono (MM): 56 Kilohms
Phono (MC): 100 Ohms
Input Sensitivity
Line: 185 mV
Balanced: 90 mV
Phono (MM): 1.7 mV
Phono (MC): 123 µV
Signal to Noise Ratio
Line: > 105 dB (A-Weighted / IHF-A)
> 108 dB (A-Weighted / IHF-A)
Total Harmonic Distortion (THD)
Line: 0.1%
Channel Separation
Line:
> 62 dB (1 kHz)
> 116 dB (1 kHz)
> 106 dB (10 kHz)
Wireless Connectivity
Wi-Fi
Wi-Fi 5 (802.11ac)  
Bluetooth
5.0
Supported Audio Codecs
aptX HD
Wireless Audio Protocols
AirPlay 2, Roon Ready, Spotify Connect
Control
External Control Support
Control4, Crestron Command, ELAN, RTI, URC
Virtual Assistant
Alexa Built-in, Siri
Mobile App Compatible
Yes: Android & iOS
App Name: BluOS
Power
Power Consumption
Standby: 0.5 W
Physical
Dimensions (W x H x D)
17.1 x 5.2 x 15.2″ / 435.0 x 133.0 x 387.0 mm
Weight
16.8 lb / 7.6 kg
Packaging Info
Package Weight
35.125 lb
Box Dimensions (LxWxH)
22.2 x 20.8 x 10.4″

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