Factory Matched Quad Tube Amp Doctor TAD EL34-STR EL34 6CA7 RED BASE
TheTAD EL34-STR REDBASE™ can be used for any EL-34 and also instead of 6CA7 and KT77. Expect a clear, harmonic and open top end, a lovely spot-on midrange, with vocal low-mids and a great bass response as you would expect it from a TAD EL34.