brimar tubes are legendary for their expansive holographic sound stage and are a great bold tone mullard replacement
sought after vintage type w/ the most precious metallurgy of the tube-era delivering more warmth and transparency
nice silkscreen, and also includes rare original carton w/ pin protector, a true collectible classic carefully curated
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full conductance balance test 98/102 % mutual gm (65 % good) + leak short gas check and life test pass
mutual gm scores are the ability to transfer current ~ especially important for push-pull preamps
give 100+ session hours w/ your specific amps voltage to fully settle in (break-in is important)
ships well packed worldwide w/ free postage!
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authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacoustics
including limited special editions + rare true-nos sealed box + pinched waist
also high-resolution headphones + premium vocal stage and studio mics
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6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cca
12ax7 12at7 12au7 12bh7 / ecc83 ecc82 ecc81 e82cc
6bq5 6au6a 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