These Mullard EL-84 / CV2975 tubes are being sold as matched pairs & have been tested for micro phonics.  In addition, the buyer may choose to have their tubes cryogenically treated, FREE of charge, as an added bonus. This is the same cryogenic treatment that we offer on our Kr Audio Tubes.

Please Note - These power tubes are being sold as matched pairs. These tubes come in their original British RAF military boxes & in their original cigar rolls.