Looking for a good tech in the Philadelphia, PA area.

@rivendell1 
That's great news and a thank you to @lou_setriodes . 
I have an old amp with bias drift sitting on my floor.

In the future, you might try RHB Sound Dezign, aka Backert Labs. Bob designs audio equipment and also does mods and repairs to tube equipment. He’s in Churchville, PA, north of Philly. He’s done dozens of jobs for me. The work’s outstanding, reasonably priced, with good turnaround time. I’ve known him for over 20 years and he’s a great guy too.

Bill at Music Technology is also a very good choice. Used him 2 or 3 times and always satisfied. He’s located outside DC.

Hi barrysandy - I wish! Churchville is right down the road from me, but when I called the # I found for his business, his associate told me he doesn't work on amps. If that's not correct, can you supply a # for me to call. I wanted to use him in the first place.  Thanks 

Just checked their website,,,it says they only work on pre's and phono pre's and it actually says they do not work on amps. What work has he done for you?  Thanks
 

rivendell1 

You're right. Was surprised that he only works on preamps now and looked it up to confirm.  In the past, before he started designing and selling preamps & phono stages, he worked on everything "tubes". I know he is very busy.

I really don't have first hand experience with anyone else other than the two I mentioned. Sorry I couldn't be more helpful.