I have been playing with the ASL AV-20 monoblocks that I got from Dennis Gardner and need to say I am impressed on how these little (and cheap) amps sound; I changed the tubes for JAN Phillips 6L6WGB that by default run a bit hotter and the sound improved tons vs. the stock tubes. Bottom end and detail is superb now...I am using them with a pair of Von Schweikert VR-1's I grabbed on Audiogon, and I'll just say I don't want to listen to the SDA's or the AL-III's now. They are that good. Detail is as good as ribbons, believe it or not. Bottom end is unbelievable for a speaker this size. The bad news, is that I now want to hear some bigger VS's......
Anyway, I contacted Divertech (ASL rep., I think), and asked what could be done to these little jewels to make them even better. Here's their response:
"Parts inside are surprisingly good and replacing coupling caps with Sonicap will only make a little improvement.
You should try to get some thing really good like the Mundorf Supreme Silver-Gold. A few resistors in the signal path can be improved with Wishay or Mills made types.
You can also upgrade them to the latest version AV-25 by just changing the output transformers. This will sound better, increase the power and get rid of the hum. They are fairly easy to replace and we have a few at $85.00 each."
So, I have a new project and I am seriously considering passing the AL-III's to another polkie that wants to discover, as I call it, the "truth" of ribbons. Not an interest check...if I decide to sell them will post them ;)