NAD M28 Power Amplifier

$9,499.00

200W x 7 Continuous Power

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.

Locking connectors and special interface electronics allow long cable runs without noise pickup or signal loss. All you get is awesome sound without the possibility of noise pickup or interference.

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. The M28 is an amazingly powerful and transparent amplifier that delivers a new level of refinement, sonic character, and dynamics.

Purifi Hybird Digital Amplification

The Masters Series M28 uses Eigentakt amplifier technology, manufactured by NAD in license from Purifi. This 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 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.

  • Low-Impedance: 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 regardless 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 560W dynamic power into 4 ohms is testament to this.
  • Stable Design: Inherent to the Eigentak technology is its very analog-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.

Balanced & Unbalanced Inputs

The NAD Master Series M28 can accept both balanced (XLR) and single-ended (RCA) inputs. It features seven XLR inputs and seven RCA inputs. Balanced XLR connectivity is the same efficient audio interface used by studios to provide the highest level of signal integrity with the lowest noise floor. The Balanced XLR inputs allow long cable runs without noise pickup or signal loss; all you get is awesome sound without the possibility of noise pickup or interference.

Note: You can only make one type of connection (XLR or RCA) per input channel. There is a switch for each channel that allows you to choose between XLR or RCA.

Binding Post Speaker Terminals

The Masters Series M28 power amplifier features high-quality, gold-plated, colour-coded binding posts for speaker connection. These heavy-duty binding posts will accept bare wire (16-10AWG), pin-connectors, and banana plugs (single only). The gold-plated terminals provide optimum sound transmission and excellent resistance to corrosion. Only connect loudspeakers rated 8-ohm to 4-ohm.

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

Check out the brochure for more information – NAD M28 Brochure

Check out our first look unboxing video:

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