2 Rare NOS Hitachi 6201 SameCode Triple Mica Dual Dgetter OEBox AudioTubes (12AT7W ECC801)

we pride ourselves on a proprietary complimentary value-added complete refurb screen and deox process

2 matched triple-mica same-code 6201 hitachi japan, revered audiophile crown jewels! incredible detail w/ dual d-getters

hard to find premium upgraded 12at7 ecc81 w/ original boxes, direct japan import carefully curated + twice tested

full gm conductance test 105/102~101/101 % gm (65%)+ life test pass! (life check = key feature other testers lack)

our mutual gm output test applies real world 225vdc voltages w/ filtered dc, plus an impeccable gas test and leak/short check

gm relates to current transfer ability, whereas gain is a signal amplification factor ~ a subtle difference based on actual voltages

give several sessions or up to 100+ hours w/ your specific amps voltage to settle in (break-in is important)

ships well packed worldwide ~ authentic vintage hifidelity audio curation