Been using mine for almost a year now with the TH-600s and its a match made in heaven. They will have to pry this thing from my cold dead fingers when I go. The standing 6SN7 thread is a gold mine of information. The RCA VT-231 and Westinghouse tubes(15$) are a great synergy with this amp too. Tun Sol BGRP are another favorite of mine, but finding them at a reasonable price is tough.
I wont know until the week of the meet. Sometimes business bleeds over onto Saturdays. After about 50 hours with the X's-I think they are just starting to break in and sound more coherent.
Are the feet replaceable on this amp? The amp is abit light for my taste and slides around alot. Grippy adhesive feet would greatly improve the experience.
My Apex Peak Volcano just came in, with an Electro-Harmonix tube, used as a substitute for the Tung Sol. I purchased the Sophia tube also, as to have a better tube to start off with. Sadly that tube never came in. Nor was I informed. This Electro-Harmonix tube has to be the most Microphonic tube I have ever heard. I am also hearing background noise, I have never heard on my system before. I left a call to TTVG, but this is a disappointing experience. I hope this all gets resolved, but today, I am going to pack the entire system back up.
I'm afraid many current production tubes are not very good mechanically or sound wise so dont blame the APV for this
Get yourself a good selection of vintage tubes like the Tungsol, Brimar or Mullard which will make a big big difference to the sound quality!
I did, The CBS/Hytron 5962 is a vintage tube I am using currently. So is the Sylvania 6SN7GTB, Peter sent me. The Brimar and Mullard tubes have a nice darkness to them, but can be difficult to find one that isn't microphonic at a reasonable price.
Personally I have never found a microphonic Mullard or Brimar unless its end of life. Some manufacturers tubes are just prone to this problem
I also like the Hytron an Sylvania too.
I plan on buying a Brimar, but can't find a Mullard for a reasonable price. The CBC/Hytron is actually very good, it is very much like the Sylvania but much cleaner at the high frequencies.
I have found in my experience though, that tubes can be microphonic or noisy with the APV, and silent through other gear.
I am not sure why that is...
I believed for a while, heck maybe still believe, that the tube socket was to blame. The socket isn't the tighest i have seen, thats for sure.
Because, the tubes i have had problems with all fit more loosely and/or had chipped or corroded pins.
Anyway, finding a silent tube is not too hard.
The Wuss, Depending on where a tube is being used, will depend on if Microphonic is an issue. In the A/P/V the tube is in the Preamp and that is when Microphonics are the most sensitive.
Complin, I want one, but they are hard to find, balanced and without being Microphonic. This is what I have so far,
6SN7W Sylvania Small Bottle 1945
6SN7GTA Sylvania Chrome dome green label
5692 CBS/Hytron
6SN7 Sophia New Stock
Tun-Sol 6SN7 New Stock
I haven't heard the Small Bottle yet, it just arrived
The CBS/Hytron so far is my favorite.
I would like the following:
Mullard CV181
Brimar CV1988
V-231 Tun-sol Round plate
V-231 RCA Black Plate
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