CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by Mullard code KB/DA. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve More than one available

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by Brimar code KB/AD. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve More than one available

1x Mullard ECC83 Valve Date Code: ?3 mCA (1953) Very rare ECC83 from Copenhagen factory with long welded plate and D-getter Tested by AVO VCM Tester Ia1 = 1.2(mA), gm1 = 1.45(mA/V) Ia2 = 0.9(mA), gm2 = 1.3(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20230522L006

***** RARE NOS Condition!! ***** ** PERFECT BALANCED Plates!! ** *** Tested NEW NOS!! *** 1962 Mullard British Military TubeBlackburn Factory (code i61 B2I1)CV492 KB/DA 12AX7 ECC83 SHORT Ribbed Grey PLATES O Getter Tube BOGEN AMP Tested - No microphonics TV-7/u Tested Condition Report: ** Tubes TESTED AND sounded good in my BOGEM AMP! No microphonics! ** ** I WILL COMBINE SHIPPING COST ON M Tested to be in guaranteed working conditionI tested these on a High Quality Professonal Hickok TV-7/U Tester:TUBEs TEST RESULTs: Tube: 50/50 - {Minimum Rating of 32/32 for TV-7 Testers are equal to 65% of average new ratings.} If you have Questions or Comments contact me on eBay Check out the photos! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! I Combine Y ITEMS!!! ** ShippingBefore You Pay. I accept PayPal and Postal M O.Please see click to enlarge photos for condition and quality.Check out My Other Items For Sale!WILL BE SHIPPED OUT FAST! Before bidding please read my shipping and return policy. I WILL COMBINE SHIPPING COST ON MY ITEMS!!! NOTE: International buyers - THE BUYER IS RESPONSIBLE FOR SHIPPING FEES. INTERNATIONAL BIDS WELCOME. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR ALL TAXES, CUSTOM FEES, and additional shipping fees. ANY RETURN WILL BE ACCEPTED BUT BUYER WILL PAY SHIPPING FEES AND I WILL NOT REFUND ANY SHIPPING FEES.*TESTED ON Calibrated HICKOK TV-7 B/U*{Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.}ALL tubes will be ran through a Daniel Nelson calibrated HICKOK TV-7 B/U for a full mutual conductance test. This is a world class tester that is calibrated by the Hickok doctor. Its test results are dead on and you can buy with confidence. If you want to know what the exact Gm rating of the tube is please message me. My Return Policy: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.

***** RARE NOS Condition!! ***** ** PERFECT BALANCED Plates!! ** *** Tested NEW NOS!! *** 1962 Mullard British Military TubeBlackburn Factory (code i61 B2I1)CV492 KB/DA 12AX7 ECC83 SHORT Ribbed Grey PLATES O Getter Tube BOGEN AMP Tested - No microphonics TV-7/u Tested Condition Report: ** Tubes TESTED AND sounded good in my BOGEM AMP! No microphonics! ** ** I WILL COMBINE SHIPPING COST ON M Tested to be in guaranteed working conditionI tested these on a High Quality Professonal Hickok TV-7/U Tester:TUBEs TEST RESULTs: Tube: 50/50 - {Minimum Rating of 32/32 for TV-7 Testers are equal to 65% of average new ratings.} If you have Questions or Comments contact me on eBay Check out the photos! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! I Combine Y ITEMS!!! ** ShippingBefore You Pay. I accept PayPal and Postal M O.Please see click to enlarge photos for condition and quality.Check out My Other Items For Sale!WILL BE SHIPPED OUT FAST! Before bidding please read my shipping and return policy. I WILL COMBINE SHIPPING COST ON MY ITEMS!!! NOTE: International buyers - THE BUYER IS RESPONSIBLE FOR SHIPPING FEES. INTERNATIONAL BIDS WELCOME. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR ALL TAXES, CUSTOM FEES, and additional shipping fees. ANY RETURN WILL BE ACCEPTED BUT BUYER WILL PAY SHIPPING FEES AND I WILL NOT REFUND ANY SHIPPING FEES.*TESTED ON Calibrated HICKOK TV-7 B/U*{Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.}ALL tubes will be ran through a Daniel Nelson calibrated HICKOK TV-7 B/U for a full mutual conductance test. This is a world class tester that is calibrated by the Hickok doctor. Its test results are dead on and you can buy with confidence. If you want to know what the exact Gm rating of the tube is please message me. My Return Policy: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.

mullard mc1 12ax7 / ecc83 / cv492 cv492 = military version of ecc83 = specially selected ecc83 Blackburn 1956 long plate Goal post square getter MC1 B6J IA 1.35 / 1.5 and GM 1.5 / 1.65 113%/125% and 94%/103% (new = 1.2 and 1.6)uk only please

mullard mc1 12ax7 / ecc83 / cv492 cv492 = military version of ecc83 = specially selected ecc83 Blackburn 1955 long plate Goal post square getter MC1 B5F IA 1.5 / 1.6 and GM 1.7 / 1.8 125%/133% and 106%/113% (new = 1.2 and 1.6) uk only please

MULLARD CV492 12AX7 ECC83 LONG PLATES SQUARE GETTER GOOD QUALITY BRITISH

mullard mc1 12ax7 / ecc83 / cv492 cv492 = military version of ecc83 = specially selected ecc83 Blackburn 1956 long plate Goal post square getter MC1 B6J IA 1.35 / 1.5 and GM 1.5 / 1.65 113%/125% and 94%/103% (new = 1.2 and 1.6)uk only please

mullard mc1 12ax7 / ecc83 / cv492 cv492 = military version of ecc83 = specially selected ecc83 Blackburn 1955 long plate Goal post square getter MC1 B5F IA 1.5 / 1.6 and GM 1.7 / 1.8 125%/133% and 106%/113% (new = 1.2 and 1.6) uk only please

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by Mullard code KB/DA. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve More than one available