1 (x) amperex 6922, gm tested, vintage hifi audio, $120 each single pair or quad available1 (x) amperex 6922 d-getter, gm tested, vintage hifi audio, $220 each single pair or quad available 1 (x) amperex 7308, gm tested, vintage hifi audio, $220 each single pair or quad available 1 (x) dario e188cc, gm tested, vintage hifi audio, $195 each single pair or quad available 1 (x) siemens e188cc, gm tested, vintage hifi audio, $275 each single or pair available worldwide postage! $12-$15 usa, $39-$46 worldwide, priority extra *more available, inquire with your pre amp needs
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