2 matched old stock germany production 6ca7 el34 audio preamp output tubes, heavy weight quality metallurgy w/ dimple tops
these were rumored to be made by rft on telefunken tooling, revered for their quality, warmth and pin-point accurate tone
take your listening experience to a higher level of warm 3-dimensional engagement w/ immersive holographic imaging
this vintage type is coveted for live-concert style intimacy and delineation of instruments vocals and percussion
tune and transform your sound reproduction across multiple genres w/ more realism and delicate tonality
full conductance test, matched 89/90 % gm + life test pass! (key longetivity indicator) always rebias!
our special gm output test applies real world 225vdc voltages w/ filtered dc, plus impeccable gas / leak / short test
mutual gm conductance scores are the ability to transfer current ~ especially important for push-pull preamps
~
we pride ourselves on a proprietary complimentary value-added complete refurb screening deox process
give several sessions or up to 100+ hours w/ your specific amps voltage to settle in (break-in is important)
ships well packed worldwide + free postage!
~
authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacoustics
see our offical site for reserve/request options + part number list below
including limited special editions + rare true-nos sealed box + pinched waist
also high-resolution headphones + premium vocal stage and studio mics
~
6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cca
12ax7 12at7 12au7 12bh7 / ecc83 ecc82 ecc81 e82cc
6bq5 6au6 6267 6ca7 6ca4 6aq5 / 6v6 6l6 6sl7 6sn7 5y3 5u4 5ar4
5814 5751 5965 6189 6201 7062 7189 / cv2492 cv4004 cv455 cv4085
el34 el84 ef86 ef94 ez81 ecc85 e180cc gz34 (ef804 soon)