5965 tubes are an audiophile secret tube, revered sonics w/ a touch lower mu / more head room (60 vs 47)
popular 12at7 ecc81 sub (12av7), quite similar to the legendary 7062 e180cc electrically / which listeners rave about
great for a variety of apps including driver stages cathode follower tone stacks and more
all 4 are black plate tone types, 3 nec nippon japan halo getters and 1 usa? triple-mica solid disc!
carefully curated screened and twice tested
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full amplificaton + useful life test 85/75 ~ 78/71 ~ 83/71 ~ 80/65 % mutual gm (65 % good) + life test pass!
our unique gm output test applies 225 vdc simulating actual circuits plus filtered dc + leak short gas
all tubes also undergo an added-value complimentary proprietary refurb deox process, one of a kind seller qc!
always give 100+ session hours at your specific amps voltage to fully cure and stabilize
ships fast well packed worldwide + free economy postage!
~authentic vintage hifidelity audio curation by caliacoustics~