1x NOS Matsu/Mullard 7189 Premium 6BQ5 EL84 VintageAudioPreampTube +FreePost

1 x old stock matsu japan 7189 seam top preamp audio tube, high power 6bq5 el84 upgrade! Sought after by audiophiles for their quality metallurgy and warmth. Revered smooth tone w/ translucent highs. The british supplied expertise and tooling via'transfer of technology' provides critical audiophile advantages.

Same anodes, micas, electrode geometry, glass envelope, spot welding, grid wire spacing + cathode processing chemistry. + oe fragile boxes included. Take your listening experience to a higher level of 3-dimensional engagement w/ immersive holographic imaging. These vintage types are also coveted for their realism and live-concert style delineation of instruments vocals and percussion. Tune and transform your sound reproduction across multiple genres w/ more delicate intimacy and rich harmonics. Full gm conductance test, 1 left: 100 %. (life = key longetivity indicator). Our special gm output test applies real world 225vdc voltages w/ filtered dc, plus an impeccable gas test + leak/short check. Mutual gm conductance scores are the ability to transfer current especially important for push-pull preamps. We also pride ourselves on a proprietary complimentary value-added refurb screening deox process. Give 100+ session hours w/ your specific amps voltage to fully settle in (break-in is important).

Authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacoustics. See our official site for reserve/request options! 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 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.