The NAD M12 Stereo Preamplifier is a direct digital preamplifier that offers high performance with a 35-bit data path and various input options. It also includes a pure Class-A buffer and tone controls for a new level of precision in the digital domain.
NAD Direct Digital™ Innovation
Direct Digital™ amplification offers the highest level of performance. The 35-bit data path with 24-bit coefficients and 62-bit accumulation, and dithered truncation back to 35-bits after DSP functions guarantee the overall 24-bit accuracy. With this degree of resolution, all preamp functions can be accomplished with a new level of precision all in the digital domain. Because of the super high resolution, even 24-bit files are processed without truncation or loss of information.
Uncompromised Connection
Standard inputs include AES/EBU, Asynchronous 24/192 USB, coaxial and optical digital inputs and balanced and single-ended line level inputs including a high performance MC/MM phono stage. Rounding out the picture, a pure Class-A buffer using the latest generation of Super OP Amps provide low impedance balanced and single-ended connections to power amplifiers or active loudspeakers. A remote controls all functions and IR repeaters, 12V triggers, and a serial port to make integration with advanced control systems a snap.
Connections
Line Level Input
- Input Impedance
- 56 kilohm + 220pF
- Input Sensitivity
- 40mV (ref. 500mV out)
- Maximum Input Signal
- >8Vrms
- Signal/Noise Ratio, A-weighted
- >90dB (ref. 500mV in 500mV out, volume set to unity gain
-
- >80dB (ref. 2V out, Volume maximum)
- Channel Separation
- >70dB (ref. 1kHz/10kHz)
- Frequency Response
- ±0.3dB (ref. 20Hz-20kHz, Tone Controls – On)
-
- ±0.3dB (ref. 20Hz-20kHz, Tone Controls – Off)
- Frequency Response (subwoofer out)
- 10-200Hz (ref. -3dB)
Output
- Maximum Output Level
- >8Vrms into 600 Ohms
- THD (CCIF IMD, DIM 100)
- >0.005% (ref. 20Hz-20kHz, 2V out)
- Balanced
- >2Vrms
- Standby Mode
- <0.5W
Tone Controls
- Treble
- ±10dB at 10kHz (ref. 2V in 2V out)
- Bass
- ±10dB at 100Hz (ref. 2V in 2V out)
USB Input
- Digital USB Front/Digital USB Back (USB Type A)
- MP3/WMA:48kHz
-
- FLAC: 24bit/48kHz
- Computer (USB Type B)
- 24 bit/192kHz PCM content from PC or Mac
Digital Input (Coaxial, Optical, AES/EBU)
- Input Impedance
- 75 Ohms (coaxial)
-
- 110 Ohms (AES/EBU)
- Sample Rate
- 32kHz to 192kHz
- Frequency Response
- ±0.5dB (ref. 20Hz-96kHz @ 192kHz)
- Channel Separation
- >75dB (ref. 1/3 rated power, 10kHz 4 Ohms)
Weights & Dimensions
-
- Gross Unit Dimensions* (WxHxD)
- 435 x 133 x 383mm (17 1/8 x 5 1/4 x 15 1/8″)
- Net Weight
- 8.1kg (17.9lb)
- Shipping Weight
- 14.5kg (32lb)
*Gross dimensions include feet, extended buttons and rear panel terminals
