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i collection(and my ears) cr Welcome to ... TUBE MUSEUM NEW YORK PRICE IS EACH Bid one (1) for one for EACH TUBE! YOU CHOOSE TUBES 1 THROUGH 6 Bid one (1) for one SINGLE RARE NO-LONGER-MADE TUBE! 6 RARE USA RCA 6AN8 ORIGINALLY AVAILABLE GET YOURS BEFORE THEY ARE ALL GONE! FIRST COME FIRST SERVE - PICK THE NUMBER YOU WANT Always the highest quality. Fast shipment. Safe, protective packaging. A pleasure to do business with. Competent. Trustworthy. Been buying tubes for several years now. Buyer: frankdefreitas ( 1130 ) US $249.95 New message from: badbusa_2000 (84 ) Dear Tube Museum, I had these tubes in for a bit now, all I can say is wow! Next level sound indeed, I won’t go into all the details but boy am I glad I purchased them. Phenomenal product and glorious sound. Would buy from again. Thank you. NOS RCA (# 233781615969 ) Buyer: badbusa_2000 ( 84 ) US $224.99 Past month 1960's O-GETTER! RARE OLD STOCK 1960's USA! 6AN8 is a Triode-Pentode tube that is in the Ampeg VT22, VT40 (Version with Distortion from 1976), also, several Gibson USA model amps, and HiFi audio equipment manufactured by Fisher, McIntosh, Heath kit, Marantz, PEAVEY, SUNN, Univox, Dynaco, and more. SUPERB QUALITY THAT'S NEARLY IMPOSSIBLE TO FIND SO METICULOUSLY PACKED, TESTED, AND PROMPTLY DELIVERED EXCEPT AT THE TUBE MUSEUM! TUBE MUSEUM NEW YORK TUBE MUSEUM QUALITY PRECISION TESTED TUBE! RCA (RADIO CORP. OF AMERICA) RCA 6AN8 MADE IN USA FROM THE 1960's with O-GETTER! COMES IN NOS UNORIGINAL AND UNMARKED AUTHENTIC RCA USA BOXES ACTUAL Pictures of THESE the RCA "MADE IN USA" 6AN8 ALL TUBES ARE MADE BY RCA USA with OLD STYLE LETTERING, O-GETTER for Detailed sound! SUPERB OLD STOCK 1960's RCA Made in USA LOW NOISE 6AN8 TRIODE-PENTODE Made in USA in the 1960's WITH DUAL ELECTROSTATIC SHIELDS and O-GETTER! CERTIFIED ULTRA-LOW-NOISE SPECIMENS ZERO (0) HEATER-TO-CATHODE LEAKS! TubeMuseum tested tubes takes the guesswork out of the process of selection delivering you the best Audio tubes that possibly can be. PRICE IS EACH TUBE MADE IN "U.S.A." TESTED FOR LOW MICRO-PHONICS AND STABILITY AND LONGEVITY RCA DESIGN DEFLECTS AND PROTECT GAS BUILD-UP AND PROMOTE QUIET TUBE-PERFORMANCE! RECOMMENDED IN: AMPEG VT40 AMPEG VT22 DYNACO MK-III PEAVEY VTA 400 PEAVEY VTA 800 PEAVEY VTB 300 PEAVEY VTG 300 SUNN Coliseum PA SUNN SCEPTRE SUNN SENTURA SUNN SONIC SUNN SOLARUS (190L) SUNN 100S SUNN 290S (190B) SUNN 1000S SUNN 1200S (350L) SUNN 2000S (350B) PRECISION TESTED & LIVE AUDITIONED AMPLITREX AT1000 TESTED: Amplitrex AT1000 (Fixed Bias Mode) 6AN8 Triode (15.0mA) / Pentode (12.0mA) THESE TEST REALLY NICE! tube 1: NOS RCA 6AN8 O-Getter 16.7mA (111%) / 12.9mA (107%) 4,600 Gm (102%) / 7,800 Gm (100%) (SOLD!) tube 2: NOS RCA 6AN8 O-Getter 14.5mA (98%) 14.2mA ( 117%) 4,500 Gm (100%) / 8,700 Gm (111%) (SOLD!) tube 3: NOS RCA 6AN8 O-Getter 14.5mA (98%) 14.2mA (118%) 4,600 Gm (102%) / 8,450 Gm (108%) (AVAILABLE!) tube 4: NOS RCA 6AN8 O-Getter 14.4mA (97%) 14.2mA (118%) 4,500 Gm (100%) / 10,400 Gm (133%) (AVAILABLE!) tube 5: NOS RCA 6AN8 O-Getter 12.0mA (80%) 12.5mA ( 103%) 3,600 Gm (80%) / 7,800 Gm (100%) (AVAILABLE!) tube 6: NOS RCA 6AN8 O-Getter 17.6mA (116%) 12.0mA ( 100%) 4,500 Gm (100%) / 6,200 Gm (80%) (SOLD!) All tubes have Zero (0) Heater-to-Cathode Leaks! Important! - Heater-to-Cathode Leaks. Most tube testers don't show these leaks, and when even a small leak is present, it prevents the tube from reaching it's designed operating-point, rendering the tube useless in a short time, because it only grows with usage. We dispose of these defective tubes, others sell them to unaware buyers. - Microphonics. Most sellers don't care, they sometimes sell noisy tubes. If you tap on them lightly in a circuit with pencil eraser they either thump trough the speakers or squeal. Only BUY THE BEST Tube Museum Tested Tubes ... Did you know that weak 6AN8 preamp tubes put an unnecessary strain and SHORTEN the LIFE of you other tubes in the circuit? TubeMuseum tested tubes takes the guesswork out of the process of selection delivering you the best Audio tubes that there possibly can be. Bid one (1) for one SINGLE RARE NO-LONGER-MADE TUBE! 7 RARE USA RCA 6AN8 ORIGINALLY AVAILABLE GET YOURS BEFORE THEY ARE ALL GONE! FIRST COME FIRST SERVE - PICK THE NUMBER YOU WANT TESTED AT REAL-WORLD POWER LEVELS ON AMPLITREX AT-1000 Tested on Amplitrex AT1000 Digital Tube Test System ..." * Rp or plate resistance is the second most important parameter as it directly affects the output impedance of the preamp. Circuit designers are looking at Mu primarily, Rp next and we hardly care about Gm at all. Why then do most vendors measure Gm and Gm alone? Because most testers only measure Gm! No commercial tester ever measured Mu either ( until the AMPLITREX AT1000 was introduced.) And even the Hickock, treasured for measuring Gm, doesn’t measure it meaningfully (due to current dependency), accurately (due to calibration difficulties) or consistently (due to internal circuit drift).'"... This tube is known for excellent performance, smooth highs, outstanding 3-D holographic soundstage, lots of open-air, inner detail, and overall perfect resolution and balanced sound. Terms of Sale PRICE IS EACH ! International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. Per eBay's terms of service which every eBay account holder must agree to as part of being an eBay member, a bid is a legally binding contract. Please read the Terms & Conditions carefully before bidding. By bidding on this auction, you understand and agree to eBay's terms of service as well as all terms and conditions mentioned here. Buyer pays all shipping, Item must be in original condition including cosmetic lettering on tubes so handle with white-glove care, un-used with all original boxes, packing material, environmentally safe cornstarch pellets, and shipping box. All sales are final with NO RETURNS on self installed mic tubes. All exchanges must be pre-paid and returned in original packing, complete with no sign of wear or abuse, exactly the same condition as it was when you received it. In the event that the product is not in the same condition, and does not test the same as you received it, you will be subject to a refusal and return, a determined restocking fee, repair charge, or disqualification. RETURN AUTHORIZATION (RA) number and instructions is required before sending any items. Shipping and handling charges are non-refundable. We do not guarantee that your tester, or your tester's measurements will be the same as the Amplitrex AT-1000. Older testers, different testers, or the same tester may report different test measurements, and may not measure the same tube meaningfully (due to current dependency), accurately (due to calibration difficulties) or consistently (due to internal circuit drift) There is no warranty or returns based on what any other tube tester reports. THE COST OF ALL USA SHIPPING INCLUDES INSURANCE, TRACKING NUMBER AND DELIVERY CONFIRMATION DEPENDING ON YOUR COUNTRY'S MAXIMUM INSURANCE RULES "PRIORITY or EXPRESS SHIPPING" may be required for certain countries , U.K.,Italy, Russia, Indonesia, Australia, Pacific Rim, and others.(Please kindly ASK before you bid or we reserve the right to cancel your bid) International Buyers - Please note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. 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