Correct, tube input stage and MOSFET output stage, 300 watts each. They are designed by Baskom H King (BHK), who also designed the Constellation monsters. Paul McGowen asked him to design the amp and BHKs only requirement was that he be given free reign to design it as he wants. He succeeded!

The BHK electronics also use linear power supplies, not SMPS.

To call it a "MOSFET" output stage IMHO would be a disservice. I have heard many MOSFET amps before. None have sounded like this before (Redgum/Modwright).

Bascom calls it an n-channel only layout which I think he employed in the Constellation Audio amps previously.

Yeah, it’s a really unique design. I don’t quite get it, but it sounds amazing!

Congrats. I would love to hear the BHK amps and pre in my system.

I completed my cabinet project and finished setting up the system today. It came out pretty nice!

Wow JR! Simply beautiful. Any chance you are going for their new AN1 speakers to complete a full PS Audio Digital setup?

Nice!!!

They are intriguing in concept. I'll definitely check them out, hopefully at next year's Axpona.

The Raidho's are so good and so dialed in with the subs that I can't see giving them up anytime soon. But I do like rotating speakers and the combination of the PS amps that can drive pretty much anything and the JL subs gives me some flexibility. I'm thinking maybe the small MBL 126 stand-mounts -I've always loved MBLs and those would be a great fit for my system. I would likely keep both pairs of speakers and rotate them every few months. However, before new speakers, I want to work on room treatments.

I just got my brand new system set up and I'm already thinking about my next targets! Audio is a helluva drug!

Thanks!