On Sale Now! Save 8% on the Electro-Harmonix 6CA7, Matched Quad (4 tubes) by Electro-Harmonix at Tritone Guitars. MPN: 10769540. Hurry! Limited time offer. Offer valid only while supplies last. 6CA7 Big Bottle Tetrode. Electro-Harmonix is rocking the vacuum tube community with the superior quality of the ''EH'' series tubes.Matched quad. Matched within 5% for both gain and transconductance. Direct replacement for any EL34.
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