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In collaboration with Manchester-based semiconductor specialist -p5000, NAD has developed a circuit topology which “corrects even the smallest pulse deviation” by comparing the PCM input signal against an internally generated PWM reference signal.

Schuko users should experiment with our bidirectional EU plugs to be sure. This creates an additional format conversion layer and NAD admits that the digital-direct inputs have a sonic advantage over going in analog.

6moons audio reviews: NAD M2

This review page is supported in part by the sponsors whose ad banners are displayed below. The sound lost luster and drive. We publish its English translation in a mutual syndication arrangement with the publishers.

In the latter case, Accpuhase signal of digital sources like CD or network players connects directly to the amplifier input.

While the basic operation of this very energy-efficient approach does resemble digital by consisting of just two switch modes of the output devices—on and off like 1 and 0—the more common pulse width modulation technique is actually defined by the duration between switch changes.

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While playing with the dB range under signal, an unintentional click too far and all hell breaks loose. At first glance this makes no sense.

There are also coaxial and Toslink digital outputs. The M2 has a snazzy display whose text could be a few picas larger however to remain visible from the couch without strain. Envision a basic pocket calculator.

Shortly afterwards, the display shows shortcut sccuphase triggered by clippingthen there’s sudden blessed silence.

This review first appeared in the April issue of hi-end hifi magazine fairaudio. And in theory, this duration—very non-digital at that—can assume endless intermediate values to not be limited to given samples.

While the latter deserves praise, this unprotected feature with no secondary enable function to avoid such mishaps seems somewhat ill-considered. All images contained in this review are the property of fairaudio. This gets us to the NAD M2. The concept begs for a bevy of digital inputs and NAD offers five: Then its outputs are fixed and its volume control bypassed.

Also the M2 was far from happy when sharing a duplex with an idling Fonel Emotion while playing itself. It belongs to the still rarer species of digitally driven class D amplifier which process the signal in the digital domain.

My 16A AC line created no bottle neck however.

The – um, protection circuitry of NAD works reliably. Possible errors include pulse amplitude incurred by remaining power supply rippledpulse width and a softening of the pulse accuphasw — all factors with are directly relevant to the quality of the music signal.


After filtering out the switching frequency components, the outputs of course pass analog signal. Most of you already know that class D stands for neither class Digital nor means that this class of operation is digital per se.

As is customary for our own reviews, the writer’s signature at review’s end shows an e-mail address should you have questions or wish to send feedback. If it accepts digit figures, subsequent calculations accuphaze easily exceed those digits.

While on power and AC, the M2 reacts audibly accupjase correct power polarity. This described an actual occurrence in my digs accompanied by very accelerated heart beat.

A calculator with 35 digits will produce more accurate results. Coddling and all that. It allows additional corrective math just ahead of the speaker outputs.

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While digital signal is processed up to 24 bits and analog automatically converted to 24 bits, NAD actually talks of bit math. The M2 draws a lot of current which theoretically could challenge your residential circuit breaker system. NAD then warns that “due to its special technologies and high-frequency shielding, the M2 must be plugged into a accuphzse grounded socket, i.

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