revered worldwide! la radiotechnique (rt) was a french company that produced incredible limited run premium audio tubes
this ultra special 12au7wa pair features an ultra high resolution 'square' dgetter w/ track tip for transparent sound reproduction
warm grey plates and low noise design, premium 12au7 ecc82 upgrade w/ very rare military issue super selection mark flags
this translates into highly screened tubes for mission critical apps requiring the highest quality control and purest sonics
precious tube-era metallurgy of this early stacked mica version captures fidelity rich sonic veil imaging and juicy harmonics
often compared to holland, french tubes feature a more dynamic top end, and more romantic veiled vinyl style lush resolve
true audiophile sought-after collectible pair w/ original la radiotechnique boxes included and oe carton wrap!
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full mutual gm conductance test pristine balance 111/111~111/112 % gm (65) + useful life test pass (key longetivity indicator)
our unique gm output test applies 225 vdc simulating actual circuit operations w/ filtered dc + leak gas short check
we also pride ourselves on a proprietary complimentary value-added complete refurb screen and deox process!
give 100+ session hrs w/ your specific amps voltage to fully cure (breakin process is important)
ships fast worldwide well packed + free economy postage!
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authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacoustics
see our official website for reserve/request options + limited run special editions
+ rare true-nos sealed box + pinched waist + high-res headphones