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NAD Masters M23 Stereo Power Amplifier

Pure Power

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.

Features & Details

HybridDigital Purifi Eigentakt™ amplifier technology
Continuous Power Output: 2x200W into 8 ohms; 2x380W into 4 ohms
Dynamic Power Output: 2x260W into 8 ohms; 2x520W into 4 ohms
Bridged Power Output: 700W mono continuous into 8 ohms
In bridged mode, can be combined with the NAD M33 BluOS Streaming Amplifier to create a 2x700W system
Virtually unmeasurable noise, harmonic distortion, intermodulation distortion
Wide, flat frequency response into any loudspeaker load
Balanced (XLR) and single-ended (RCA) auto-sensing inputs
Three-position adjustable gain control
12V trigger input

ANALOG AUDIO INPUT/SPEAKER OUT

Input impedance (R and C)	Single-ended: 56 kohms + 200 pF Balanced: 56 kohms +200 pF
Frequency 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 Ohm
Rated output power into 8 Ohms (Bridge mode, ref. 20 Hz-20 kHz at rated THD, both channels driven)	>700W into 8 Ohm
THD (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)	> 770W
IHF dynamic power (Stereo mode, at 1 kHz)	8 ohms: 260 W 4 ohms: 520 W
IHF dynamic power (Bridge mode, at 1 kHz)	1017W
Peak 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 kHz
Channel separation	High 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 Gain	19dB (low), 23.9dB (mid), 29.2 (high)
Bridge Mode Gain	25.1dB (low), 30dB (mid), 35.2 (high)
Standby Power	<0.5W
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 Weight	9.7 kgs / 21.4 lbs
Shipping Weight	17.5 kgs / 38.5 lbs

NAD

NAD M23