NAD M28 Power Amplifier Unboxing | The Listening Post | TLPCHC TLPWLG

The Masters #M28 uses Eigentakt™ amplifier technology, manufactured by #NAD in license from Purifi. This new technology, which NAD was the first to embrace for the M33 Masters Series Streaming Amplifier, adds another level of precision by taking into account previously unknown effects of the output filter in the feedback loop and further refinement of the self-oscillating Class D technology as used by previous NAD Hybrid Digital designs. The result is a performance level that approaches the theoretical limit in measured performance, be it at whispering levels or at full power.

In common with the previous generations of NAD Hybrid Digital technology but unlike most class D amplifier designs, the M28 is impervious to the loudspeaker load it is presented with, maintaining the same wide and even bandwidth response irrespective of the speaker’s impedance and at the same time providing high current capability. The continuous 200W into 8 ohms on tap for all channels (driven at the same time) and 700W dynamic power into 4 ohms is testament to this.

Inherent to the Eigentakt™ technology is its very analogue-like behaviour in the unlikely event the amplifier is driven into clipping. Whereas many class D designs can become unstable, Eigentakt™ behaves in a way similar to the benign way of clipping with instant recovery of well executed traditional class A/B amplifiers.

The sonic character of the M28 only reinforces the story told by the numbers. This is an amazingly powerful and transparent amplifier bringing new levels of refinement and dynamics at any level.

Features...
7 x 200 watts per channel into 8 ohms (20-20,000 Hz) at 0.001% THD with all channels driven
7 x 340 watts into 4 ohms with all channels driven
4-ohm stable for use with a wide range of speakers
Innovative HybridDigital Purifi Eigentakt™ technology offers pristine "analog-like" Class D amplification
Frequency response: 20-20,000 Hz ±0.1dB
Signal-to-noise ratio: 124 dB (balanced); 102 dB (unbalanced)
Standby mode engages after 30 minutes without input
Detachable power cord
Fully Balanced Audio
The same efficient audio interface used by studios provides the highest level of signal integrity with the lowest noise floor.

Effortless Power
As our most powerful amplifier ever, the M28 can pump out over 700W into difficult loads to follow complex dynamic peaks in your movies and music. Everything from rim shots to asteroid explosions sound remarkably real and immersive.
The M28 has power reserves to meet the demands of the latest high-resolution digital soundtracks. Thanks to the advanced Purifi Eigentakt™ amplifier technology, all this monster power comes at a lot less cost than traditional technology and delivers more power and performance!

Seven Channel Power Amplifier
The NAD Master Series M28 seven channel power amplifier can effortlessly create a truly realistic surround sound experience when mated to the NAD M17 V2i Surround Sound Preamp Processor (sold separately). Rated at 200W continuous power per channel, the M28 will provide over 340W dynamic power per channel with all channels driven into 8-ohms. The NAD M28 will pump out all the power you need into difficult loads (down to 4-ohm) to follow the complex dynamic peaks in your movies and music. The M28 has power reserves to meet the demands of the latest high-resolution digital movie and music soundtracks. The sonic character of the M28 only reinforces the story told by the numbers.


Specifications...
Continuous output power into 8 Ohms and 4 Ohms (Stereo): - 180W (ref. rated THD, 20Hz-20kHz, all channels driven)
THD+N 20Hz-20kHz, CCIF IMD, SMPTE IMD, DIM 100: - 0.005% (ref. 20Hz – 20kHz)
Clipping Power (8 Ohms): - 300W (at 1kHz 0.1% THD)
IHF Dynamic Power 8 Ohms: 320W
4 Ohms: 700W
2 Ohms: 650W
Signal/Noise Ratio, A-weighted: -94dB (ref. 1W), -118dB (ref. rated power)
Damping Factor: -750dB (ref. 8 Ohms, 50Hz and 1kHz)
Frequency Response: ±0.1dB (ref. 20Hz-20kHz), -2.5dB at 3Hz and 100kHz
Input Impedance: 47 kilohm (Balanced), 23 kilohm (Single-ended)
Input Sensitivity: 1.3V (ref. rated power)
Time to Standby Mode at no input signal: ≤30 minutes
Rated Power: 1600W (120V 60Hz, 230V 50Hz)
Standby Power: -0.5W
Dimensions: (WxHxD) 435 x 156 x 380mm
Weight: 14.1kg

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