The Amp Garage

Taylor has these cute little modules producing 150-200v from 2-16VDC in. Stewmac is using them in their new "Valve Factory" mini amp kit.

https://www.stewmac.com/electronics/amp ... -1-amp-kit

https://www.shop-tes.com/1363-hvps-vertical-low-noise/

Xvive is making Vactrols currently:
https://stompboxparts.com/ldrs-optocoup ... tocoupler/

Don't know where else to post this...
https://www.bleepingcomputer.com/news/s ... -a-decade/

Anybody recognize this tube (manufacturer)? It's an E83CC, likely from Russia or Eastern Europe with the plates only riveted on one side.

I have JJ KT88s in my PS300, but it doesn't get used much. I had one early failure, but no problems since.

The original GE 6550-A specs says 660 max plate volts (which is why Fender used "selected" 6550 tubes). KT88s are rated for 800 max plate volts. Just sayin'

Looks nice!

Yes, I put KT88s in mine, and so far, so good.

I have a 300PS, I got the 'computer grade' :P caps to re-cap it awhile ago, but just haven't been able to get together the gumption to wrestle it onto the bench and do the work. The transformers in these are beastly and they are a bit of a rat's nest inside. https://mhuss.com/PS300/images/PT.jpg htt...

Looks nice. Is there a reason you brought out the axial cap leads to both sides instead of just placing the pads where the leads come out of the cap?

Not sure who did this one, but here it is.

Since they're in Europe, I'd suggest 2019.

Haven't seen that schematic in a while, lol.

Best approach is to breadboard your proposed circuit and tweak it until it sounds good to you.

As long as it's stable (no persistent or intermittent oscillation), no worries.