#Class d amp plus

I’m not saying that a next step won’t have any audible benefits, but in the grander scheme of things, the margin is shrinking. One could argue that we passed the point of diminishing returns a few years ago already. Here is the opinion of the Purifi team on GaN as discussed in an interview:īruno: Well, with the sort of audio performance we’re getting I’d say that we’re asymptotically approaching “perfect”. I went with Amps for my overheads (4-ch NC252MP) and have been happy, and will probably look his way again if and when my 12+ year old Emotiva amps give up the ghost. I'd love to have a set of Benchmark amps, but I'd need at least four to handle my base layer, and at $3k a pop that's a lot of dough. The scary thing is that $5.4k for an amp is actually a fair price compared to most of the 'mainstream' competition. Costs are way up for just good, solid equipment, and the 'high end' amps are now in the $20k and up range. Thousands of dollars for things like Bryston amps and other 'run of the mill' audiophile equipment. I've been in price shock since revamping my system about ten years ago. Less about the oscillation frequency, more about how fast they switch (slew) between states, with resulting reduced loss and hysteresis ('dead time' as they switch states).

#Class d amp plus

Regarding the switching frequency, for audio the plus with GaN is their low device charge storage and how quickly they switch in addition to their low parasitic resistance. Ralph is a member and will probably chime in at some point. I would say tube people find them preferable and that this is a marketing move to get the tube crowd something more efficient, light weight, and more dependable. The seller has been designing tube amps for 40 years and has been claiming that this new GaN amp has 2nd and 3rd order distortion products which people find preferable. So, one has to wonder, what's the benefit of using GaN if your design doesn't exploit their capabilities/advantages?

State of the art current mosfet class d like Purifi has a higher switching frequency and less distortion without any heat issue. The faster speed of GaNFETs requires less deadtime, which has to be increased at higher switching frequencies (when we first started doing this, I thought the deadtime would be constant regardless of the switching frequency and learned otherwise either way deadtime becomes a greater distortion influence as you increase the switching frequency).' 'In a nutshell, reduced distortion and less heat than MOSFETs, not like that's much of a thing.