Description

i collection(and my ears) cr Welcome to ... TUBE MUSEUM NEW YORK 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 ) Past month 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 ..."This is the one you want, the LONG-PLATE ONLY version from 1959'"... QUALITY MULLARD BVA 1,2/1,2 (100%/100%) & 1,600/1,500 GM *ICONIC MULLARD REFERENCE TUBE! MADE IN ENGLAND in 1959 MULLARD labelled for BUGLE-BOY! ECC83 = 12AX7 LONG-PLATE! * A tube that has all characteristics equal to the PUBLISHED values, in other words that its PARAMETERS all lie in the centre of their BELL CURVE distributions. ALL ARE ACTUAL Pictures of this MULLARD "MADE IN THE U.K." ECC83 for Detailed sound! 1959 MULLARD BVA ECC83 / 12AX7 CLASSIC 19mm LONG GRAY-PLATE Made in GREAT BRITAIN / BLACKBURN, ENGLAND RAREST "TREBLE-CLEF" LONG-PLATE WITH SLANTED GETTER! DATE CODE B9I (1959') LOW NOISE ECC83 WITH HALO-GETTER WELDED ON PURE-COPPER STEM AND COPPER RODS CERTIFIED ULTRA-LOW-NOISE SPECIMEN TESTED FOR LOW MICRO-PHONICS AND STABILITY AND LONGEVITY QUIET TUBE-PERFORMANCE! PRECISION TESTED & LIVE AUDITIONED AMPLITREX AT1000 TESTED: TUBE 1: ( AVAILABLE ) Side 1: 1,2mA (100%) W0W! 1,600 mA/V (100%) Side 2: 1,2mA (100%) W0W! 1,500 mA/V Zero (0) Gas and Zero (0) H-to-K Leaks, as displayed in the Amplitrex AT1000 screen photos! * WARNING: Be alert for sellers SHOWING AMPLITREX screens with gas with a status "Gas Disabled" I guess trying to conceal or camouflage a gassy tube reading - no other reason to hide the gassy-truth! MOST 12AX7's BEING SOLD ELSEWHERE HAVE A VERY LOW mA/V & Gm pumped up artificially with trick bias and power settings! Don't take foolish chances with Other offers with weak 50% TO 70%GM (mA/V), if lucky! TubeMuseum tested tubes takes the guesswork out of the process of selection delivering you the best Audio tubes that there possibly can be. TUBE MUSEUM QUALITY TUBES WITH ACCURATE TEST RESULTS GUARANTEED TESTED AT REAL-WORLD POWER LEVELS ON AMPLITREX AT-1000 in Fixed-Bias Mode 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. 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 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. Visit this seller's eBay Store! TUBE MUSEUM NEW YORK PayPal Welcome! NOTICE: All text & images © 2002-2024 Copyright © of The Tube Museum New York © All Rights Reserved By entering this site you are agreeing to be bound by the terms of this agreement. All photographs and text appearing in the Tube Museum New York (TubeMuseumUSA) site(s) are the exclusive property of The Tube Museum New York © (except where stated otherwise) and are protected under international copyright laws and treaties. They are made available for your personal viewing enjoyment only. No images or unique text are within the Public Domain. The photographs and text may not be copied, reproduced, redistributed, manipulated, projected, used, or altered in any way without the prior express written permission of The Tube Museum New York ©. 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