(excellent round up of excellent experiences)


I have similar experience. I purchased a Delta 120B built in 1992, and The unit ran very hot. I contacted Frank, went there and picked up the parts we thought was wrong, I purchased the Exicon transistors from Frank as an upgrade. After I installed all the parts. I took it back to Frank's and he checked the unit out and adjusted the bias for me, meanwhile he explained to me how certain adjustment should be done and why.
Now I am using this amp driving my Sonographe SW-1000 sub, listening to it now as I am typing.
I kinda had to quote that one verbatim. I don't like the quick-buck artists, they exemplify how the mixing of money and art is usually an ugly affair--specially from the ethical perspective.
Fortunately, with Frank and AVA, we have an example of an ensemble of slow-buck artists. Frank is also an audio design artist. And, from various reports, an ensemble of customer-service artists.
I'm just happy that when I rolled the used audio dice, it landed on AVA. The first time I ever emailed Frank, it was about buying a used 550 on audiogon. I got a quick reply that addressed my concerns about "upgrading" the beast to a proper XLR input stage, etc. (the word "audioflake" came up), then concluded by congratulating me on my upcoming purchase and well wishing on what I'd be obtaining. I never bought that amp, and I never forgot that email. When a local chance to get another 550 came up, I was ready.
Yes, I'm sure glad AVA has been around long enough for me to get around to them.
