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NAD Masters Series M28 Seven-Channel Amplifier Debuts

At 200-watts x 7, NAD’s M28 is the first multi-channel power amplifier to utilize Purifi’s Eigentakt (self-clocking) technology that unlocks new levels of audio performance.

NAD Masters Series M28 Multi-channel Amplifier

Flagship Multi-channel Amp for Home Theater

NAD Electronics today unveiled their top-of-the-line seven-channel high performance amplifier, the Master Series M28 ($4,999). Conservatively rated at 200-watts x 7, NAD’s new reference power amp is the first multi-channel amplifier to utilize Purifi’s Eigentakt™ (self-clocking) amplifier technology, which was first embraced in the NAD M33 Masters Series BluOS Streaming DAC Amplifier.

HybridDigital™ Purifi Eigentakt™ Amplifier

Purifi’s new technology 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 HybridDigital™ designs. Purifi uncovered many seemingly small non-linearities that, when corrected, can make a dramatic difference in the overall sound. Advanced technology, well-thought-out PCB layouts and advanced mathematical modelling solved the last remaining limitations of audio amplifiers. The result is less noise and lower distortion, delivering a performance level that approaches the theoretical limit in measured performance, be it at whispering levels or at full power.

NAD Masters Series M28 Seven Channel Amplifier Front

In common with previous generations of NAD HybridDigital™ technology, but unlike most Class D amplifier designs, the M28 is not only able to easily handle long cable runs but 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. 200 watts into 8 Ohms of continuous power for all channels driven at the same time and 560W of dynamic power into 4 Ohms. That’s even more power and at lower distortion (0.003% THD) than it’s predecessor, the Masters Series M27.

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

“Using the Purifi Eigentakt technology, the M28 delivers massive amounts of power with sound quality that has to be experienced to fully appreciate. Even better, NAD engineers have managed to deliver all this performance at a cost less than traditional technology.”

Cas Oostvogel, NAD’s Product Manager.
NAD Masters Series M28 Seven Channel Amplifier Rear

Connectivity 

For ease of installation in a variety of systems, the M28 accepts both single-ended RCA and balanced XLR inputs, the latter being the same efficient audio interface as used by professional studios to provide the highest level of signal integrity with the lowest noise floor for the best possible performance. The high-quality binding posts provide rock-solid speaker connections.

The M28’s styling is designed to match the NAD Masters Series M17 V2i preamp/processor, for a seven-channel home theater system that will astound you with its power and grace.

Features:

  • HybridDigital™ Purifi Eigentakt™ Amplifier
  • 200W x 7 channels into 8 Ohms (20-20,000 Hz) at 0.003% THD
  • Rated Power:
    • 200W into 8 Ohms
    • 340W into 4 Ohms
  • FTC Power:
    • 220W into 8 Ohms
    • 400W into 4 Ohms
  • Dynamic Power: 
    • 280W into 8 Ohms
    • 560W into 4 Ohms
  • 4-Ohm stable for use with a wide range of speakers
  • Locking XLR connectors and special interface electronics allow long cable runs without noise pickup or signal loss
  • Balanced Line Inputs
  • Single-ended Line Inputs
  • 12V Trigger in
  • Auto Turn-on
  • Ground Lug
  • Detachable AC Power Cord

Price & Availability

The NAD Masters Series M28 will begin shipping this month (August 2020) for $4,999 U.S. MSRP.

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