2 NOS Matsu/Mullard 12AX7 ECC83 Pre/Audio Tubes ~ Vintage Holy Grail Strong Pair

Description: revered by audiophiles, especially guitar amps, vintage matsu japan 12ax7 ecc83, top sonic echelon mullard alternativesoften described as an open tone, dynamic and 3-dimensional, and known for their slightly higher gain than averagethese '60s production feature british supplied engineering and audiophile transfer of technology, key advantages include:same anodes + micas, electrode geometry, glass envelope, spot welding, grid wire spacing and cathode processing chemistry!translucent highs and warm mid-band tone euphony, live-concert style delineation between instruments vocals and percussion take your listening experience to a higher level of dimensional engaging detail, immersive harmonic imaging and transparencytransform sound reproduction and realistic playback across multiple genres w/ rich bass depth and holographic textured resolveset of 2 matched old stock preamp audio tubes, carefully curated via direct japan import, boxes included, twice tested full mutual gm conductance test pair 1: 98/99~100/96 % gm (65% good) + important life test pass = a key longetivity indicatorpair2: 90/90~91/90 ~ pair3: 84/88 88/88 ~ pair4: 97/96~98/94 ~ pair5: 90/95~92/86 ~ pair6: 92/91~88/92 ~ pair7: 94/88~84/85our gm output test applies real world 225vdc voltages w/ filtered dc, plus an impeccable gas test / leak / short checkwe also pride ourselves on a proprietary complimentary value-added refurb screening and deox process, one of a kind qcgive several sessions or up to 100+ hours w/ your specific amps voltage to settle in (break-in is important)ships well packed worldwide w/ free economy postage ~ authentic vintage hifidelity audio curation by caliacoustics ~see our official web site for new arrivals, reserve/request options+ true-nos sealed box rarities + limited run special editions

Price: 175 USD

Location: Leander, Texas

End Time: 2024-08-15T00:19:04.000Z

Shipping Cost: 0 USD