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Item Tag: Preamp Tubes

  • Very Strong Siemens (RCA Label) E88CC/6922 O-Getter Gold Pin Germany 1967

  • 1 x NOS WestingHouse Eico 7591 Preamp AudioTube ~ Holy Grail Vintage 1960s USA

    introducted back in 1958, westinghouse was one of the first to manufacture 7591, high quality and sourced by many oems!fisher scott sherwood pilot sansui kenwood pioneer eico harmon gibson and jukeboxes were just a few to incorporate 7591this audiophile crown jewel is soughy after, westinghouse 7591 w/ very nice silkscreen, made specially for eico brandwarm sound reproduction w/ grey plate internals, live-concert holographic imaging w/ vinyl style intimacylegendary heavy glass w/ thick hollow getter (like telefunken) made in 1964, includes plain or branded box full mutual gm conductance test, pristine 105 % gm (65 good) + important life test pass! (a key longetivity indicator)our special 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 complete refurb screening deox processgive 100+ session hours w/ your specific amps voltage to fully settle in (break-in is important)ships well packed worldwide w/ free economy postage, 3 available authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacoustics, see our website!new arrivals + limited special editions + rare true-nos sealed box + pinched waist + high-resolution headphones

  • NOS Zenith 7591A Preamp AudioTube ~ HolyGrail Vintage USA ~ WarmSolidDiscGetter

    introduced in 1963, the legendary 7591a was an improved design w/ better screen dissipation and a low-loss basefisher scott sherwood pilot sansui kenwood pioneer eico harmon gibson and jukeboxes were just a few to incorporate 7591arevered by audiophiles, the copper neck solid-disc float getter zenith 7591a captures an incredible amount of low-register detailwarm sound reproduction w/ grey plate internals and black plate upper heat dissipator for live-concert holographic imagingthis collectible intimate vinyl style classic also features a pristine silkscreen and original box, plus twice tested for mutual gm full conductance test, pristine 110 % gm (65 good) and 10750 micromhos + useful life test pass! a key longetivity indicatorour special 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 complete refurb screening deox processgive 100+ session hours w/ your specific amps voltage to fully settle in (break-in is important)ships well packed worldwide w/ free economy postage authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacoustics, see our website!+ limited special editions + rare true-nos sealed box + pinched waist + high-resolution headphones

  • 1x Vintage OO DualGetter Toshiba 7591 PowerTube /Special Hi-Fi Edtn /NOS Classic

    Introduced in 1958, the high quality 7591 (predates the 7591a by several years) and is similar to 6gm5 / 7868 / el506. their diverse catalog was all the rage back then, featuring the shiva ‘light’ logo till 1959, w/ toshiba shibaura electric 1960-1976.

  • 7591 A General Electric Made in U.S.A Amplitrex AT1000 1MP #552001

    Tested Advance Digital Tube Tester Amplitrex AT1000. Amplitrex AT1000 Advance Digital Tube Tester, Hickok 752a tube tester, AVO Type 160. 1MP 807 VT100 RCA=6L6 EL34 ”D” Getter Made in U.S.A Amplitrex Tested#542122&115.

  • 7591 A FISHER Made in U.S.A Amplitrex AT1000 #546006,546007,546002

    Tested Advance Digital Tube Tester Amplitrex AT1000. Amplitrex AT1000 Advance Digital Tube Tester, Hickok 752a tube tester, AVO Type 160. 1MP 807 VT100 RCA=6L6 EL34 ”D” Getter Made in U.S.A Amplitrex Tested#542122&115.

  • 2x MatchedNOS 7868 GE USA PowerTubes/Fisher Bogen Ampeg /Like 7591A w/Adapter

    + ampeg conn scott sherwood pilot sansui kenwood pioneer eico harmon gibson and even seeburg jukeboxes incorporated these. these oe boxed ge usa classics are collectible for their sound, long tenured history, and top build quality (see their 5star series!).

  • 1x NOS GE USA 7591A Vintage Power Tube / w/ OE Box Classic / Several in Stock

    Introduced in 1963, the legendary 7591a was an improved design w/ better screen dissipation and a low-loss base. warm rich sound reproduction w/ grey plate internals, live-concert holographic sound reproduction w/ vinyl style intimacy.

  • Strong pair of GE 5814A (12AU7) preamp tubes – tested VG 2700/2750 & 2900/2850

    This product is a pair of vintage GE 5814A preamp tubes, known for their high-quality performance. The tubes have been tested and have a strong pair with readings of 2700/2750 and 2900/2850, ensuring reliable and consistent audio output. These vacuum tubes are a valuable addition to any vintage audio setup, providing a touch of nostalgia and character to your sound system. With the trusted GE brand and specific model number, you can expect top-notch quality and performance from these vintage preamp tubes.

  • Tung-Sol 5751WA 12AX7 Tall Gray Plates D Getter TV7 Tested Strong

    All tested strong/NOS on a professionally calibrated TV7A/U tube tester with the following results (32 is minimum): Tube 1- 46/42 Tube 2- 44/48 Tube 3- 44/44 Tube 4- 48/52