This board uses 2 12AU7 driver tubes. I have a mix of vintage Sylvania, Mullard, Tungsol, etc. I don't have enough of each to put 2 of the same brand in both of the amps. In other words 2 Tungsol in one amp and 2 in the other. Does it matter if I put 2 Tungsol in one amp and two Sylvania in the other amp, or should I do one Tungsol and one Sylvania in each?
2 posters
MK3 VTA Board
Bob Latino- Admin
- Posts : 3263
Join date : 2008-11-26
Location : Massachusetts
Hi,
It doesn't matter which tube is in there and they all should work well together - BUT - changing out the front (voltage amplifier) tube will have a lot more influence on the sound of your two amps. What I would do, if you only have two of one type of tube, is make the amps have the same tube line up - like a Tung-Sol in the front position and a Sylvania in the rear position of BOTH amps. Then swap the tubes from front to back and note any change in the sound of the amps.
I am sure that you will find a combination in both amps that will sound fine with your associated equipment.
Bob
It doesn't matter which tube is in there and they all should work well together - BUT - changing out the front (voltage amplifier) tube will have a lot more influence on the sound of your two amps. What I would do, if you only have two of one type of tube, is make the amps have the same tube line up - like a Tung-Sol in the front position and a Sylvania in the rear position of BOTH amps. Then swap the tubes from front to back and note any change in the sound of the amps.
I am sure that you will find a combination in both amps that will sound fine with your associated equipment.
Bob
rudes- Posts : 61
Join date : 2012-03-07
That's what I thought made the most sense. Thanks Bob!
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