QUAD factory matched 6V6 6V6-TK Telefunken Elektroakustik tubes. These are precisely matched at the factory and the results are marked on each set.
The TELEFUNKEN Elektroakustik 6V6-TK is newly manufactured and cryogenically treated rendition of the legendary 6V6. Originally released in 1937 by RCA, the 6V6 is a beam-power tetrode vacuum tube ideal for use in hi-fi audio equipment and music instrument amplifiers. The 6V6 has been used in popular guitar amplifiers such as the Fender Champ, Princeton Reverb, and Deluxe Reverb for decades, and the Black Diamond Series 6V6-TK is a perfect replacement for keeping the same performance and tone as the originals.