M66

The Masters M66 BluOS Streaming DAC-Preamplifier is the most advanced preamplifier NAD has ever offered and represents a whole new class of hi-fi separation components. This preamplifier combines a plethora of inputs, including MM/MC phono and HDMI eARC, with an audiophile DAC and a high-resolution multi-room music streamer. The result is a versatile and powerful device that meets the highest demands of modern audiophiles.

Sophisticated Technology

The M66 is equipped with the full bandwidth version of Dirac Live Room Correction and Dirac Live Bass Control. These technologies allow the M66 to independently control each connected subwoofer, ensuring a smooth and consistent response in your listening room. The combination of Dirac Live Room Correction and Dirac Live Bass Control delivers more accurate room performance than any two-channel component. This makes the M66 a revolutionary device that sets a new standard for home audio.

Elegant Design

The M66 exudes class and quality with its elegant aluminum casing, super-smooth digital volume control and vibrant 7″ touchscreen. Visually, sonically and technologically, it is an ideal match for NAD's award-winning Masters M23 power amplifier. Of course, the Masters M66 BluOS Streaming DAC-Preamplifier can be paired with any high-end amplifier, making it a versatile addition to any high-end audio system.

Everywhere Music

With a high-resolution network streamer based on the acclaimed BluOS multi-room music management system, the M66 provides access to more than 20 streaming services, including several that offer lossless and high-resolution audio. Using the intuitive BluOS app on a smart device or personal computer, listeners can play music from their favorite streaming service, their personal music libraries and thousands of Internet radio stations, in up to 24-bit/192kHz resolution. Like all BluOS-compatible components, the M66 features full MQA decoding and playback.

Dirac Live Room Correction and Bass Control

The M66 integrates Dirac Live Room Correction and Dirac Live Bass Control. Plug the included calibrated microphone into the M66's USB port, then launch the Dirac Live app on a smart device or personal computer. The app guides you through the calibration process and then generates correction filters that compensate for acoustic problems such as standing waves and unwanted reflections. You'll enjoy more textured bass, improved tonal accuracy, vastly improved clarity and more focused imaging.

A first for a stereo component: the M66 features four balanced and four single-ended subwoofer outputs and integrates Dirac Live Bass Control, which allows multiple subwoofers to be independently calibrated. Dirac Live Bass Control optimizes the subwoofer output in both the frequency and time domain, creating a seamless mix between the subwoofer(s) and the main speakers, and smooth, consistent bass response throughout the listening area, not just in the sweet spot.

Peak performance

The heart of the digital portion of the M66 is formed by ESS Technology's flagship Sabre DAC and ADC chips. These audiophile designs are known for their exceptionally wide dynamic range, ultra-low noise and distortion, and excellent time-domain performance.

The M66 is the first component to feature NAD's innovative Dynamic Digital Headroom (DDH) circuitry. When activated in the BluOS app, DDH eliminates digital inter-sample peak clipping distortion, which can occur during digital-to-analog conversion with sudden high-frequency transients. The benefits are especially noticeable with percussion instruments: rim shots are more impactful but less sharp; cymbals are more realistic and less splashy.

Flexible Connectivity

The M66 offers a full range of analog and digital inputs to 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 always present in vinyl playback without affecting bass response. For TV and movie playback, there is 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 analog inputs and a pair of XLR balanced inputs.

Extended Outputs

In addition to unbalanced RCA and balanced XLR outputs for connecting to a power amplifier, the M66 has four unbalanced RCA and four balanced XLR subwoofer outputs. The M66's dedicated headphone amplifier has a very low output impedance and a very high maximum output voltage, allowing 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-proof

The Masters M66 represents the pinnacle of what is technically feasible 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-proof technology. As technology evolves, M66 owners can add new capabilities simply by inserting an MDC2 module into one of the slots.

Features and Details

• Ethernet and Wi-Fi networking
• BluOS network streamer provides access to more than 20 streaming services, including several that deliver lossless and high-resolution audio
• ESS Sabre ES9038PRO DAC and ES9822PRO ADC chips premium
• Innovative Dynamic Digital Headroom (DDH) circuitry 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 ensures seamless mixing between the subwoofer(s) and main speakers, and smooth bass response throughout the listening area
• Extremely 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 line-level RCA analog inputs, one pair of balanced XLR inputs
• Special headphone amplifier with low output impedance and very high output voltage
• Upper-precision resistor-ladder digital volume control
• 7″ touchscreen on front panel
• Elegal aluminum housing
• Two MDC2 expansion slots for adding future capabilities
• Includes high-quality IR remote control