2x Matched NOS Amperex * USA 7308 Gold Pin Audio Tubes ~ Grail 6DJ8 6922 Upgrade ~ Long Life Low Noise Incredible Tone Classic Warmth Great Bass / Vocals Instruments Rode K2 NTK Mics AT04060 ~ E188CC CV4108 Altv ~ Pairs Available

the amperex usa sound is incredibly clear, w/ a rich dazzling top end, and vivid vocal reproduction, all w/ lush articulation

often dubbed the breath of life! by listeners enthusiasts + vocalists, this clarity king has clearer resolution than holland types

the revered neutral stage w/ natural response, elicits a euphoric quality walking the line between warmth + transparency

the playback is quite full and expansive, while revealing the most intimate details w/ a crisp resolve, + dimensional bass

immerse yourself in luminous fidelity, vinyl-style old school charm, and low noise + long 10k hour life premium gold 7308!

the 7308 series (e188cc cv4108) is becoming a collectible, due to its rugged internals + improved microphonic dampening

whether a mono block, preamp, hifi stereo, or tube mic, upgrade 6dj8 circuits w/ one of the highest ranked amperex ever made

aesthetix Io phono stage, avalon compressor, audible Illusions pre, audio technica at-4060 tube mic, rode k2 / ntk tube mics, audio notes, audio research vt200, audio horizons phono, arc ph-5 phono, air tight, blue mics, akai reel to reel tape recorder, arc ls-15 linestage, ear acute one, BAT VK-30, BAT VK-3ix preamp, Blue Circle BC21.1, climate, conrad johnson et5 / ct6, conrad johnson 16LSII / 17LSII preamp, cat sl-1 mark III, counterpoint magnum opus 1 preamp, cary, DODD audio linestage preamp, decca Integrated amp, einstein,eastern electric minimax cd player, EAR - Herron 6- Kora Hermes II tube dac, Herron VTSP-2 preamp, earmax, herron 3a, lamb, Lector, Manley Chinook, Musical Fidelity, manley steelhead, reader, Music Hall 25.2 / 25.3, peachtree nova, Pathos Integrated amp, raysonic cd, Scott Nixon DAC, sonic frontiers line 2, Supratek Cortese preamp, Sunfire Classic vac tube control center, pathos classic one / mkIII, vac, woo audio wa3, zande ECC88 6DJ8 E88CC E188CC CV5358 M3624 CV2492 6N11 V50064  8416 7308 6922WA CV4108 CV5358 CV4110 CV4111 PCC88 7DJ8

2x matched amperex usa 7308, authentic vr * etch visible w/ magnifier 

not to be confused w/ 6922 internals! 6dj8 upgrade, 10,000 hr lifetime!?!

3 balanced matched pairs available w/ boxes included (1 pair sold), + old silkscreens visible!

fully tested for mutual conductance, gm micromhos / % gm + leak/short/gas checks

pair1: 90/90 ~ 98/88 % gm (65) ~ pair2: 90/90 ~ 90/86 % gm (65)

pair3: 121/120 ~ 116/122 % gm (65) (tube 2 includes amplitrex digital results)

pair4: 122/122 ~ 125/125 % gm (65) or 95-100 range (52) via tv7

ships well packed worldwide! ~ priority/express by request