That's the Tubelab Simple SE that'll run EL-34 thru KT-88 single-ended. George sells you the board, cheap, and his website borders on OCD detail for the build. Anyone over the age of 6 can build this.

I traded some caps for a pair of Svetlana 6550s and they sound darn good putting out about 5 watts. One of them, or perhaps one half of the 12AT7 is a little weak so I'm having imaging problems but no big deal. The 4Pis really like this amp, it's punchy, dynamic and the highs are a litle less detailed/aggressive than the 45.

Feeling better lately for those who asked; it turns out I'm the drug side-effect poster boy and it's been really hard to find the right brew for my delicate condition.

I've prescribed one of these for my newly arrived second childhood and expect to get aboard sometime in July:

Cruising the Blue Ridge Parkway on my T-100, can't wait!

I'm telling you, that's really livin'.

Have you tried any EL34's in the amp? I've been waffling about for over a year on getting some boards from George.

What did you end up using for iron?

I wish you all the best in your recovery.

Best wishes
Raymond

The 4" tall Hammond (it was on sale at Allied) box conceals 3 of those 20uF Aerovox motor runs in parallel I scored last year. Total cost about $250.

Wayne-O, there's 421 vDC at the plate. George's tables show about 5 watts for 6L6 with that voltage and a 5000ohm load, the 6550 may do a little better, perhaps 8.

I have a few other 12AT7s just haven't had a chance to slip them in yet. If the 6550s are responsible for the weak output on one side another pair is just $60bucks from BOI.

Now I'm wondering how I never had a 6550 amp before...this is one ballsy toob...maybe I need to build one of those P-P circuits with 4 per side and heat the house this winter.

Had Barbers weirdo "Modern Cool" on tonite; she's very inventive if nothing else and the CD has fab sound. Hey, maybe that's the new amp shining thru....naah, couldn't be, too few hours and too much DCR!

I'm curious what the bias method is in that amp. It seems similiar to the EL34 monoblocks that Steve built that I had.

Are you going to ride the Triumph up to Ohio for a visit???

Regards, Ron