Affordable GaN FET amp from Peachtree Audio


Peachtree Audio is offering a Beta Test program for their new GaN 1 amp (not to be confused with their GaN400) and it's being offered at a substantial discount ($1299 instead of $1999) just for being part of the Beta Test group. It has only one digital coax input and that's it. 200 Watts/channel, zero feedback, and no DAC since the GaN FETs handle that.

All the best,
Nonoise

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Showing 2 responses by ricevs

What I just read online describes the C5i as a normal class D integrated....with built in DAC......not a digital direct to PWM converter.

Some history:

Tact (Tocatta Technologies) was the first to do this back in the late 90s.....nothing new here. Tocatta Tech was sold to TI and they made chips that Panasonic used in some receivers back in the early 2000s.....Mr. Lyndorf was part of Tact and went on to make the Lyndorf amps (which he still makes and sells).......Technics released their first digital direct amp a few years ago and continues to do the same in cheaper amps and now Elegant Audio Solutions came up their own version of this type of circuit a few years ago and the Peachtree is the first implemtation of these inexpensive EAS boards.

Yes, there is digital to Analog coversion done in these amps....but not in the traditional way......there are NO analog amplifiers (op amps) in the circuit.....and no traditional DAC chips. The digital signal (PCM) is converted directly to PWM (class D type of output stage) directly in software. Tact stated in their white paper back then that this process was "inherently non linear".....hence it took them a long time to get it right.....of course, EAS has their own engineers and we have way more processing power now so hopefully this thang sounds great.

Because there are no analog stages.....there is no feedback....so the distortion measurements of this module are going to be worse than the EAS module in the regular Peachtree/LSA GaN amps. But, as most of us know.......measurements do not tell you much about how good or pure something sounds. If you are a measurements are GOD person then you will want to stick to Purifi, Benchmark and Orchard.....These amps measure REALLY good.......and they also sound really good......as good as this "digital in only baby?".......we shall find out soon.

The amp, like all others, can be modded with better jacks, wires, beefed up power supplies, etc.....for increased sonic wonderment.