A fun experiment.
Please let us know if it sounds different with the amp set at full tilt. Given the way the Gryphon works there should be no difference, but let’s find out. 
@Phil when you see the voltage drop from to 230V to 229.5V (0,2%) do you have the P20 set for High Regulation or Low Distortion? What happens when you flip the setting to the other option? I am merely curious.
It’s normally on high regulation. Flipping doesn’t make a difference.
It is working hard, with the class A continuous 1000 W …
I see the same thing happen when it gets hot in the summer, even without a heavy load.
Not a big deal, it sounds just as fantastic 
Thanks!
Hi Philippe, please can you clarify. Do you mean the weather is hot in the summer, or the p20 gets hot in the summer with no load. Going by what you said previously, I presume you mean the hot weather, but just checking.
I mean that when the listening room gets hot in the summer, the P20 gets slightly warmer, even without the class A on. And the voltage out is slightly lower, maybe 229,7V. Not as low as when it pumps out 1000 W.
Similarly, in the winter, after a cold night, the P20 is cold, and it is around 230 V.
My observation is that if the P20 is warm, either because the room is warm or because it has a heavy continuous load, the voltage out goes down a bit. When I turn off the class A, the voltage out gets back to normal, i.e. something like 229,9 V.
Like what is the temp reding on PowerPlay?
I don’t use power play.
Fair enough. P20 can work in ambient temps upto 40 celsius, but you have to keep an eye on the internal reading.
Okay Al…did you acquire your amp to be a foot warmer or
an instrument to play back your 
…? 
Enjoying your tuneful… tune ville …cave…
Happy listening
Happy birthday Al.
BTW my M1200’s have never drawn over 225 to 250 watts on my P20. I know they are of a different amp design but those number ranges are unaffected by Led Zeppelin at 90 dbl. I wanted to turn the volume ups to ‘11’ but my ears can take it.
@1cdfoley
Yes, they’re environmentally friendly, use energy conservatively, and do not waste it as heat 
Agree, I should add that I love Al’s Gryphon Amp.
Notice Al’s absence…
Probably hunkered up in his man cave grooving on newly
discovered stuff in his music he did’t know was there prior
to plugging in his amp into his P20…
He will be back one day … 
to share what he has been up to…
I took a break to sleep.
I haven’t checked how warm the P20 gets. I will check it tonight. It is in a free air space so that helps a bit.
Glad you got some sleep as it is a necessity…
If you have a chance to look at your output voltage after some time in full class A, I would be interested to hear if it goes down slightly.
Yikes. I hope all is well.
-36F at the moment. Gosh.
I would move
