PS Audio Stellar S300 amplifier

dweller, I didn't use a tube pre-amp with the Stellar amp. I ran a streamer-dac direct. BTW, new production tubes are so good now I find no need to use NOS and incur that cost anymore.

Please let’s focuse the theme I asked.
Thanks.

I am told the 300 uses different modules than PSA M700s, which in my system sound awesome

A major key repeated in other class D posts is to get their best one needs better cables

It uses the same ICE module in the Emotiva PA-1 monoblocks ($600/pair). I do wish to see measurements of both to see how they compare, as the module isn’t everything (just like two companies using the same ESS/AKM DACs can have vastly different results). 
 
The M700 measures well (a bit worse than its price dictates), so the S300 should be good too.