GaN based SU-R1000 Technics Integrated Class-D, review by TAS

George, you are pathetic:
1. You are accusing AGD with blatantly lying as to delivering 32A. This is easily verified. There is no way a reputable manufacturer would risk claiming so if it were not so.

2. You did not read from Alberto's mouth that his GaN's ARE specifically designed for audio. HIS GaN's are HIS alone.
3. Again with switching frequency! Yes, 1.5MHz is higher than 800kHz, not better. It does not make for better SQ! You are obsessed with SF and ignoring SQ!
Geez!

1. You are accusing AGD with blatantly lying as to delivering 32A.

Your dreaming, ask any tech, you try putting 32-50Amps!! as quoted through those 6550 leaf contact pin/sockets and see what happens to them over time, even the designer said the tube thing was a bit of a gimmick in an interview. (Yes for the gullible to swallow).

Again with switching frequency! Yes, 1.5MHz is higher than 800kHz, not better.

You have no idea what the switching noise filter has to get rid of it before it get to your speakers and what it does to the phase integrity of the audio band.
This is the phase shift at 600khz https://ibb.co/yPT2bH0, for 800khz the red trace would only move to the right so it’s 70 degree "worst point" at 10k now, will then be at 20k instead with 800khz.
So you still have bad phase shift with 800khz in the audio band down to 2k instead of 1k. Still bad news.

And bwt why are you here, this is a Technics SU-R1000 thread stop shilling for AGD, your only causing it more hurt.

art_boston
It's sad, he's the biggest offender of what he accuses others of doing. And the lack of comprehension... well that's a whole other story.

You both give nothing technical to your arguments at all.
And this thread is about the Technics SU-R1000, not the AGD so take it somewhere else. Please

http://www.enjoythemusic.com/hifi_world/10_2021/editorial.htm

If you want a powerful amplifier in a small case, a Class D NCore amplifier from Hypex (Netherlands) has become a popular choice"  I said last month.

Reason being NCore has overcome all the problems of Class D, notably high frequency distortion, load sensitivity and D.C. on the loudspeaker terminals.

So I was a bit taken aback to encounter all these problems on Technics new SU-R1000 Reference not-Class D amplifier you can read about on p10.

I have to call it that at their insistence, but that it's not Class D is a technicality: all the same issues arise. It is what is commonly termed an 'analogue switching amplifier'. These have been around for 20 years or more, without gaining popularity – so a surprise that Technics should try again in unconvincing fashion.