M28

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NAD M28 - Masters Series 7-Channel Power Amplifier

SKU M28

Category NAD Electronics, Masters Series, Home Theatre, Power Amplifiers, Power Amps, Receivers & Theatre

NAD Masters Series

Many of NAD’s new technology innovations are first introduced in this flagship series. World-class fit and finish reflect the advanced design and features enclosed within.

Completely immerse yourself in the moment with Purifi^TM

Purifi Eigentakt Amplification

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.

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!

Details

200 watts per channel into 8 ohms (20-20,000 Hz) at 0.001% THD with all channels driven
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

Connections:

7 balanced XLR inputs (one per channel)
7 unbalanced RCA preamp inputs (one per channel)
speaker binding post outputs for all channels
12-volt trigger input

Features

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.

12V Trigger In: The +12V Trigger input (3.5mm) allows the M28 to be switched remotely from standby mode to "On" and vice-versa by connected preamplifier, AV processor, etc. The controlling device must be equipped with a 12V trigger output (3.5mm) to use this feature.

Detachable AC Power Cord: The NAD Master Series M28 comes with a detachable IEC 3-prong AC power cord that will need to be plugged into an AC power outlet, surge protector, or line conditioner.

Protect Mode: The NAD M28 will enter protect mode if it senses a short circuit or excessive heat build-up. The amplifier's front-mounted protection lights will turn on if the unit goes into protect. If the M28 goes into protect, you should immediately press the standby button, turn off the power switch, and unplug the AC power cord.

General
Number of Channels	7
Power Output per Channel (8 ohms)	>200W
Power Output per Channel (4 ohms)	>340W
Signal to Noise Ratio	>124dB (Balanced)
Frequency Response	20-20kHz ±0.1dB
THD	0.003%
Speaker Outputs	7
Width	435mm
Height	156mm
Depth	380mm
Weight	21 kg
Inputs & Outputs
Number of Inputs	7
Level Controls	No
Speaker Connectors	Binding Posts

M28
Data Sheet

M28
Manual

M28
Quick Start Guide

***if you are interested in having this model professionally installed, please contact us for an authorised Dealer/Installer in your region

Combine the M28 with the NAD M17 V2i for a premium system with control integration options. Control Integration drivers are available here for most major Automation and Smart Home Control Systems:
NAD Control Integration Drivers

CONTROL4
CRESTRON
URC
RTI
LUTRON
PUSH
IPORT
ELAN

OTHER

BluOS Integration Utility
BluOS Simple API Document
NAD to Pronto
PC Interface Software
RS232 Test Program
HTR Remote Interface

General
Number of Channels	7
Power Output per Channel (8 ohms)	>200W
Power Output per Channel (4 ohms)	>340W
Signal to Noise Ratio	>124dB (Balanced)
Frequency Response	20-20kHz ±0.1dB
THD	0.003%
Speaker Outputs	7
Width	435mm
Height	156mm
Depth	380mm
Weight	21 kg
Inputs & Outputs
Number of Inputs	7
Level Controls	No
Speaker Connectors	Binding Posts