Not anymore . Here's a recent thread on a poor experience a fellow AK'er had with them.
http://audiokarma.org/forums/index....o-wait-for-tube-amp-restoration.770100/page-8
I haven't found any tech in the Bay Area that has provided a great customer experience. Currently I have a pair of Dynaco MKIII's with Sertech in San Jose. Lots of people have had great experiences with them, but they like most vintage tech outfits are a small business with only a couple of folks doing the work, and they have a very long back log. I've had my amps with them since early April for what I've been told is a fairly easy fix, and I'd be shocked if I get them back within the next month, even though over 2 weeks ago when I asked them how much longer the wait would be the quote was "about another week". This is not meant as a diss on them, or any techs, but rather an honest description of my present experience. I've used other techs around the area in the past, and the experiences have been pretty much the same. Frankly there isn't enough of them and there is a lot folks looking to get stuff repaired, at least around here.