{"product_id":"m28","title":"M28","description":"\u003cp\u003e\u003cstrong\u003eHybrid DigitalTM Purifi EigentaktTM \nAmplifier\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePurifi is a Danish technology company where \nsome of the leading developers in the Hi-Fi industry pursue the goal of identifying \nand eliminating the last remaining weaknesses in digital amplifier technology. \nThe current state of their work resulted in the Purifi EigentaktTM amplifier, which \nNAD was the first company to license and, until now, exclusively used in the BluOS \nstreaming amplifier M33.\u003cbr\u003eThe Purifi EigentaktTM technology impresses with \nextremely low intermodulation distortion, a particularly low total harmonic \ndistortion across the entire frequency range and the complete power bandwidth – only \n0.00017% at 100 watts output power! – as well as minimal self-noise. Since the \namplifier's distortions are lower than the self-noise of today's measuring \ndevices, Purifi first had to develop new measurement methods to be able to \nsubstantiate and document the progress.\u003cbr\u003ePivotal to the development of \nEigentaktTM technology was the realization that a memory effect occurs in the \ncomponents of the amplifier's output filter. This phenomenon, called hysteresis, \nevidently leads to the well-known sonic degradation of conventional digital \namplifiers. By modifying the output stage and using the clever algorithms of \nEigentaktTM technology, Purifi succeeded in reducing hysteresis effects by more \nthan 75 dB. Another advantage of EigentaktTM power amplifiers is that they are \nabsolutely insensitive to changing speaker loads. Their extremely low output \nimpedance also leads to a very high damping factor, which results in an \nabsolutely clean and controlled bass reproduction.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eBalanced \nSignal Transmission\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIn recording studios and professional sound \nreinforcement technology, balanced signal transmission has literally been standard \npractice for many years. It transmits audio signals not via a single conductor, \nbut via two, which – even over longer cable runs – keeps possible interference \nout. In addition to gold-plated RCA jacks, the M28 features balanced XLR inputs, \nensuring interference-free signal input without noise or interference.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHybridDigitalTM Purifi EigentaktTM \nAmplifier\u003cbr\u003eContinuous output power (2 channels driven): 220 W into 8, 400 W \ninto 4 ohms\u003cbr\u003eContinuous output power (all channels driven): 200 W into 8, 340 W \ninto 4 ohms\u003cbr\u003eImpulse power: 280 W into 8 ohms (all channels driven), 560 W into \n4 ohms (one channel driven)\u003cbr\u003eBalanced XLR inputs\u003cbr\u003eGold-plated \nRCA inputs\u003cbr\u003e12 V trigger \ninput\u003cbr\u003eAuto power-on\u003cbr\u003eGround terminal\u003cbr\u003eSeparate power cord\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eEnormous Power Reserves\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAs the most powerful NAD power amplifier of all \ntime, the M28 mobilizes an enormous impulse power of 560 W (4 ohms, one channel \ndriven). Even when all channels are in operation simultaneously, the power \namplifier still has an impulse power of a respectable 7 x 280 watts – enough \nreserves to reproduce complex dynamic peaks in film soundtracks and music \nrecordings without sound degradation. The official continuous output power is 7 x \n200 watts into 8 and 7 x 340 watts into 4 ohms.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003ePowerDriveTM ensures large \ndynamic peaks\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNAD's PowerDriveTM circuit ensures that an \namplifier has sufficient power reserves even during extreme impulse peaks to \nreproduce music signals with their full dynamics. If necessary, the power supply \nbriefly provides very high current reserves, so that almost double the output \npower can be mobilized for impulse peaks.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"NAD","offers":[{"title":"Silver","offer_id":54748566749525,"sku":"45585","price":6199.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/9715\/6693\/files\/IMG45585_114473.jpg?v=1787665661","url":"https:\/\/fidelity-hh.de\/en\/products\/m28","provider":"Fidelity","version":"1.0","type":"link"}