NAD Masters M28 Seven Channel Power Amplifier with Purifi Eigentakt Amplifier Technology

The technology that NAD presented for the first time with the NAD Masters M33 BluOS Streaming DAC Amplifier in the two-channel segment is now also to be used in the home cinema sector, namely the so-called Purifi Eigentakt amplifier technology in the new NAD Masters M28 Seven Channel Power Amplifier.


For years, the Canadian hi-fi manufacturer NAD Electronics International has been offering a truly outstanding product line with its NAD Masters Series, which is aimed at lovers of classic hi-fi systems as well as home cinema enthusiasts and always features state-of-the-art equipment, impressive performance data, as well as an impeccable appearance and a noble design. Again and again, the developers from Canada ensure that this product range maintains its status with the latest solutions, such as most recently with the presentation of the NAD Master M33 BluOS Streaming DAC Amplifier.

This solution is a stereo integrated amplifier that is not only intended to impress with its impressive range of functions, but also with an amplifier technology that is being used here for the first time. This is a so-called Purifi Hybrid Digital Amplifier, a technology that NAD uses under license from Purifi Audio, which the company also calls Purifi Eigentakt Amplifier Technology.

Purifi Eigentakt Amplifier Technology is now set to make its way into home cinema, and NAD Electronics International is launching the new NAD Masters M28 Seven Channel Power Amplifier. This amplifier combines the efficient operation of a Class D amplifier with an almost “analog” character and thus combines power with finest sound. With the NAD Masters M28 Seven Channel Power Amplifier, the Canadian hi-fi manufacturer speaks of the most powerful amplifier to date with enormous reserves, delivering over 700 watts.

NAD is convinced that the Purify Eigentakt Amplifier Technology mentioned above will offer a new dimension of precision by incorporating previously unknown effects of the output filter in the feedback loop and a further refinement of the self-oscillating Class D technology used by previous NAD hybrid digital designs. The result is a performance level that approaches the theoretical limit of the measured power.

Like previous generations of NAD hybrid digital technology, but unlike most Class D amplifier designs, the NAD Masters M28 Seven Channel Power Amplifier is designed to be insensitive to the loudspeaker load to which it is subjected, maintaining the same wide and uniform bandwidth response regardless of the impedance of the loudspeaker, while maintaining high current handling capability. NAD cites continuous 200 W into 8 ohms as evidence of this, with this figure applying to all the amplifier’s driven channels, seven in number, and up to 700 W dynamic power into 4 ohms.

The very special advantages of the so-called Purifi Eigentakt Amplifier Technology should be reflected in a very analog behavior when the amplifier is driven into clipping mode. While many Class D designs can then become unstable according to the NAD, an amplifier based on Purifi Eigentakt Amplifier Technology behaves similar to a traditional Class A/B amplifier. The result is an astonishingly powerful and transparent amplifier that combines the finest sound with enormous dynamics.

The new NAD Masters M28 Seven Channel Power Amplifier features a balanced design, so the seven inputs are not only available as RCA connectors, but also as XLR connectors. Which input is active can be determined individually for each of the seven inputs using toggle switches. Directly below the respective inputs, solidly constructed screw terminals are available for each channel at the rear of the amplifier for connecting the loudspeaker systems. 12 V trigger connections are also provided at the rear of the amplifier.

The new NAD Masters M28 Seven Channel Power Amplifier is also shown as a solution that follows the NAD Modular Design Construction, also known as MDC. In fact, it turns out that each amplifier module is designed as a plug-in module at the rear.

As abundant as the rear panel is, the front of the new NAD Master M28 Seven Channel Power Amplifier features the manufacturer’s logo alone, which also serves as a status LED in the proven manner, otherwise you won’t find anything else.

In terms of design, the new NAD Masters M28 Seven Channel Power Amplifier is of course completely in the current design language of the NAD Masters Series, so it can easily be combined with the various components of the high-end product line of the Canadians.

It measures 435 x 380 x 156 mm and weighs a whopping 21.2 kg.

The NAD Masters M28 Seven Channel Power Amplifier with HybridDigital Purifi Eigentakt amplifier technology should be in stores these days. It is the perfect partner for the seven-channel A/V preamplifiers NAD Masters M17 and NAD Masters M17 V2 AV PrePro and will be available at a recommended retail price of € 5.499,-.

Getting to the point

Purifii’s proprietary Amplifier Technology is now set to make its way into the home cinema market, with NAD Electronics International launching the new NAD Masters M28 Seven Channel Power Amplifier. This amplifier combines the efficient operation of a Class D amplifier with an almost “analog” character and thus combines power with finest sound. With the NAD Masters M28 Seven Channel Power Amplifier, the Canadian hi-fi manufacturer speaks of the most powerful amplifier to date with enormous reserves, delivering over 700 watts.

Manufacturer:NAD Electronics International
Distribution:smart audio GmbH
Price:€ 5.499,-

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