I can only address part of your question. I had an SA 5.1 preamp which I seriously considered having upgraded by Michael Elliot. I went as far as getting an RA #.
The reason I was going to send it in was it had developed a serious noise problem. Rather than having it repaired I sold it to another person (yes I did tell them about the noise) for a lot less than it was worth.
At that point I was very frustrated with tubes and replaced the SA 5.1 with a solid state preamp.
...and dats da name a dat tune.
The reason I was going to send it in was it had developed a serious noise problem. Rather than having it repaired I sold it to another person (yes I did tell them about the noise) for a lot less than it was worth.
At that point I was very frustrated with tubes and replaced the SA 5.1 with a solid state preamp.
...and dats da name a dat tune.