Windzilla
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Joined: Oct 19 2005 - 10:10pm
Replacment Tubes for VP129
Elk
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Joined: Dec 26 2006 - 6:32am

I am far from a tube expert, but I don't think this is a wise idea as the tubes are from two different "families".

The ECC83 is a European version of the 12AX7.
The ECC88 is a European version of the 6992.

Similar in a number of ways, but not interchangeable.

I also find tubes tricky to understand.

Monty
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Yeah, you really don't want to go swapping tubes with those of different specifications. Really bad things can happen to your gear. Just because it looks similar and will fit in the socket doesn't mean it won't blow electronics. 9 pin tubes, for example may have different pins hot. In a best case scenario you simply damage a tube.

This doesn't mean you can't swap around tubes with those of different specs, you just need to make sure that the amp design can handle the swap. Some can...some can't.

Audio Assylum would be a good place to start researching potential candidates for tube rolling.

Elk
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By the way, real live old Amperex ECC88 tubes are very nice. A lot of preamps use 6992 tubes and would sound great with these if they have life left in them.

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