Mismatched power tubes sound?


We are routinely told that power tube matching is critical even with amps that allow for individual biasing. I am unsure what the sound of mismatched tubes is, any suggestions?
otis

Showing 1 response by redkiwi

I lack the words to describe it, but I have experienced the sound of mismatched tubes - one set drawing about 50% more current than the other. Despite biasing, the sound was "odd", less natural, perhaps "phasey" describes it.