Sylvania GoldPin BlackPlate 6201 GBEdtn ~ HolyGrail ECC81 12AT7 ~ ECC801 12AT7WA
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 | SYLVANIA |
| Type | Preamp Tubes |
| Country/Region Of Manufacture | United States |
the top sonic echelon, rare old stock gold brand sylvania gold pin 6201 preamp audio tube w/ special black platesrevered by audiophiles for transparent sound reproduction, 3-dimensional open tone, incredible bass and lush warm musicalitythis rare collectible has the gb 'gold brand' etch which so many listeners seek out, reviews outranking mullard and even rcacollectible premium 12at7 ecc81 upgrade w/ legendary clarity, phenomenal expansive detail reveal, and lowest noise floorthis original boxed 'grail status' tube has been carefully curated and twice tested making it a true collectible rarityall tubes undergo a value-added audio audition + refurb deox process, and ship w/ free postage!~full gm conductance test 100 % gm (65) + important life test pass! (life check = key longetivity indicator)our special gm output test applies real world 225vdc voltages w/ filtered dc, plus an impeccable gas test and leak/short checkmutual gm conductance scores are the ability to transfer current ~ especially important for push-pull preamps also double checked (twice tested) for mutual gm conductance via supplier tv7 / hickok 539cgive 100+ session hours w/ your specific amps voltage to fully settle in (break-in is important)ships well packed worldwide~authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacousticsincluding limited special editions + rare true-nos sealed box + pinched waist + high-resolution headphones
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