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Kharma Monoblocks MP150D Class D Kharma Monoblocks MP150D Class D Listed On 26.06.2020
Last Update On 26.06.2020
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Kharma Monoblocks MP150D Class D

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Used

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25.00 KGS

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1 unit

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1 unit

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Excellent with original packaging.


Well, Kharma makes no other amps, so nobody knows what ideal it was voiced to. But I can say that my experience with Class D, which now spans five models heard in my system, leads me to two early conclusions. One is that the Kharma and Edge models had given me unrealistically high expectations for this still young technology. In my opinion, most Class D is not only not up to even a mid-level linear amplifier, it is, like early CD playback, often dreadfully bad. The other is that Kharma’s MP150 is the best Class D amplifier I’ve heard—and that by a country mile.Am I damning the MP150 with faint praise? Nope. The Kharma, and I haven’t a clue as to why, sounds more like a Class AB design than does any other Class D model of my experience. Perhaps most significantly so in the upper frequencies, where most Class D amps simply sound wrong, so wrong they can—again, like nascent CD playback—induce headaches. The treble of the MP150 is still a little lacking in extension and solidity, but it is notably airy.

Unlike the other three designs I auditioned for this survey, the MP150 is a beautifully balanced amplifier. No frequencies stand out, and none is disconnected from the whole. When Nina Simone sings “Don’t Explain,” from Verve’s Four Women boxset, the flute, triangle, piano, and acoustic bass are all beautifully integrated with her voice. The piano is warm and weighty, with a good sense of its percussive nature, the bass big and full, the flute breathy, metallic, the triangle just barely there but easily heard.

And talk about transparency—check out Thomas Adés’ Asyla [ECM], a well-recorded and marvelous piece of music. It begins with sparse orchestration, and with the Kharma you hear all the way back (tremendous depth is one of this little baby’s hallmarks). With the other amps I sampled, you get either a clinical clarity that disguises itself as transparency (but isn’t because it lacks air) or the sonic equivalent of a theater scrim overlaying the players. But the MP150 clearly separates each instrument like stars against a perfectly clear evening’s sky.

The MP150 has a beautiful way with dynamic shifts, too. Listen to Gidon Kremer’s latest ECM recording of the Bach sonatas and partitas for solo violin, where Kremer’s spirited yet lovely playing dances with microdynamic life; or in a more raucous mode, the Yeah Yeah Yeahs’ “Gold Lion,” from Show Your Bones [Interscope], where the opening kick and snare drums, and later the full band, all but burst out of the speakers.Interestingly, the MP150 is the smallest and lightest of the amps I tried. But when it comes to tonal naturalness, ambient recovery, frequency balance, continuousness, transparency, depth, and sheer musicality, it is, for these ears, the only Class D I know of that I would choose to live with. It may not have quite the weight and texture, bloom, or high-frequency extension of a really fine linear design, but it comes mighty close and is among the most beautiful-sounding amplifiers I know, regardless of type.Jonathan Valin comments on the Kharma MP150

The Kharma MP150 was the first Class D amp I heard—and would that all of them had turned out to be as good. No, the 150 does not completely sidestep the top-end compression of Class D/T amplification, although it is the only Class D amp I’ve heard that does not make orchestral bells sound rather more like doorbells or rattled chains, or suck most of the air and energy out of the top treble. The Kharma is, in fact, very airy—and not just in the treble. It may not be quite as minutely detailed as the incredibly detailed Rowland 201 in the midband (that snare drum in The Pines of Rome, for instance, isn’t separated out from the roar quite as clearly, although you do hear it), but it is everywhere bigger, bloomier, more energetic than its competition, sounding just that much more like a very fine Class AB amp—and like live instruments.

I don’t know all that its author, the celebrated Bruno Putzeys (see our Designer Roundtable in this issue), has done differently here, but I do know that parts-quality is extremely high (discrete transistors and FETS are used throughout), that the transformer and power supply are expensive custom-made items, that the aluminum billet chassis is very carefully shielded, and that the amp does not use an oscillator (eliminating oscillator jitter).

Of all the Class D/T amps in this survey that I have heard or reviewed, the MP150 is the sole one I could recommend without serious reservations for a high-end system. No, it is not the equal of an ARC Ref 210 or MBL 9008—nor should it be at its price point. What it is is a very good solid-state amplifier that gives you a taste of what a great solid-state amplifier is capable of. If this quality of Class D amplification is the way of the future, then the future may be rosier than certain other amps in this survey might lead one to think. That said, what the Kharma MP 150 could use—what all of the Class D amps in this survey could use—is broader bandwidth and higher linearity (particularly in the treble).

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