Stereo Power Amplifier
Building on NAD’s long tradition of identifying and developing cutting-edge amplification technology, the M23 HybridDigital Stereo Power Amplifier features Purifi Audio’s Eigentakt™ design, a once-in-a-decade innovation that virtually eliminates harmonic and intermodulation distortion. Noise is inaudible, for a completely black background and exquisite micro-detail. Conservatively rated at 2x200W continuous into 8 ohms and 2x380W into 4 ohms, the M23 can deliver live performance levels through any loudspeaker. With its unique combination of features, performance, and value, the M23 represents the new benchmark for the stereo power amplifier.
The M23 employs Eigentakt™ class-D amplifier modules manufactured by NAD under license from Denmark’s Purifi Audio. Purifi’s load-invariant design provides wide, flat frequency response, even into challenging loudspeaker loads. Noise, harmonic distortion, and IM distortion are virtually unmeasurable at all frequencies and output levels. Another benefit of the Eigentakt™ design is extremely low output impedance and correspondingly high damping factor, for iron-clad control of the loudspeaker output. NAD combines the Eigentakt™ design with our own sophisticated switched-mode power supply, which can provide additional reserves of current when needed. Amazingly powerful and transparent, the M23 can deliver 2x260W of peak power into 8 ohms and 2x520W into 4 ohms.
ANALOG AUDIO INPUT/SPEAKER OUT
Input impedance (R and C)Single-ended: 56 kohms + 200 pF Balanced: 56 kohms +200 pFFrequency response (1W into 8 Ohms)±0.06dB (20-20kHz)Rated output power into 8 Ohms and 4 ohms(Stereo mode) 80 W (ref. 20 Hz-20 kHz at rated THD, both channels driven)>200W into 8 Ohm, >380W into 4 OhmRated output power into 8 Ohms (Bridge mode, ref. 20 Hz-20 kHz at rated THD, both channels driven)>700W into 8 OhmTHD (20 Hz – 20 kHz)<0.00069% (XLR), <0.0013% (RCA)Signal-to-Noise Ratio>101.7 dB (1W into 8 Ohm)>127 dB (200W into 8 Ohm)Clipping power (Stereo mode, at 1 kHz 0.1 % THD)>210 W (0.1 % THD 1 kHz 8 ohms)Clipping power (Bridge mode, at 1 kHz 0.1 % THD)> 770WIHF dynamic power (Stereo mode, at 1 kHz)8 ohms: 260 W4 ohms: 520 WIHF dynamic power (Bridge mode, at 1 kHz)1017WPeak output current>25 A (in 1 ohm, 1 ms)Damping factor>800 (ref. 8 ohms, 20 Hz to 6.5 kHz)Frequency response±0.06 dB (stereo), ±0.054 dB (bridged) 20 Hz -20 kHz -3 dB at 60 kHzChannel separationHigh gain RCA: >97dB, Low gain XLR: >115dB (1kHz)High gain RCA: >75dB, Low gain XLR: >96dB (10kHz)Stereo Mode input sensitivity (for 200 W in 8 ohms)Low gain: 4.5V (low gain), 2.5V (Mid gain), 1.4V (High gain)Stereo Mode Gain19dB (low), 23.9dB (mid), 29.2 (high)Bridge Mode Gain25.1dB (low), 30dB (mid), 35.2 (high)Standby Power<0.5W
DIMENSIONS AND WEIGHT
Gross dimensions (W x H x D)435 x 133 x 396 mm (17 1/8 x 5 1/4 x 15 5/8 inches)
Net Weight9.7 kgs / 21.4 lbs
Shipping Weight 17.5 kgs / 38.5 lbs