NOS Zenith 7591A Preamp AudioTube ~ HolyGrail Vintage USA ~ WarmSolidDiscGetter
Specifications
| Return Shipping Will Be Paid By | Buyer |
| All Returns Accepted | Returns Accepted |
| Item Must Be Returned Within | 14 Days |
| Refund Will Be Given As | Money Back |
| Brand | Zenith |
| Type | Preamp Tubes |
| Model | 7591 7591a 7868 |
| MPN | 7591 7591a 7868 |
| Country/Region Of Manufacture | United States |
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
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