Tested Pair of 12AX7 Groove Tube / JJ Audio Receiver Guitar Preamplifier Vacuum Tubes Country of origin: China ? Production era: 1980s Model: 12AX7 ECC83 Manufacturer: NA Type: Preamp Plate type: gray with copper rods Base type: 9 pins Spacers: two with getter guards Getter frame: halo wire Getter flash: top Filaments: standard Glass: clear Stencils: excellent Condition: very good same construction Usage (estimate): moderate Quantity: 2 Please review the photos for more detail Test results: Good to strong balanced test results for Gm: 1.30 / 1.15 and 1.45 / 1.45 For Gm, the suggested minimum value is: 1.0 Shorts: None detected For testing, a calibrated Triplett 3444A tester was used Compatibility: Suitable for vintage tube-based equipment, ideal for use in guitar amplifiers, preamps and general audio equipment The tubes will be carefully packed to ensure safe shipping Estimated delivery time within the USA is 3 to 7 business days Standard shipping service is US Postal 1st class Shipping is combined when applicable Please feel free to contact us if you require any additional information

NEW GROOVE TUBES GT6550R (SVETLANA 6550 C ) VACUUM TUBE TESTED. THIS IS A BRAND NEW SVETLANA WINGED C 6550 C MADE IN RUSSIA THEN REBRANDED BY GROOVE TUBES IN CALIFORNIA. IT WAS RATED A 4 (1-10) TO INDICATE EARLY BREAKUP . THIS TUBE WAS PURCHASED AT THE GROOVE TUBES FACTORY IN CALIFORNIA WHEN GROOVE TUBES WAS SELLING OFF ITS INVENTORY AFTER THE COMPANY WAS BOUGHT OUT BY THE CHINESE (FENDER) IT HAS NEVER BEEN USED ASIDE FROM BEING PUT INTO MY JACKSON 648 TUBE TESTER. TEST RESULTS: LIFE TEST - PASS SHORTS/ LEAKAGE - PASS OUTPUT- 104% @ 39.5mA (70% is min good) MICROPHONICS- PASS THERE IS NO BOX BECAUSE IT CAME IS A PLASTIC TUBE THAT CONTAINED 4 OF THESE 6550’s. Sold as is seen in photos , test results may vary. Guaranteed NOS. This is a good tube with no issues. No returns unless the tube arrives damaged , I will package it properly.

GT6L6B Pair Groove TubesBranded Fender Performance Tested Made in Russia -Amplifier Power Tubes- Tested excellent on calibrated Mutual conductance tester as pictured. Orders will be cancelled after seven days of non payment. All tubes are tested for short circuits; tested cold and hot. Combined shipping for only three orders. Ships within 24 hours after payment No local pickups

For your consideration are two Groove Tube 7025 12AX7Vacuum Tubes. These tubes were tested on a Hickok 539C where the minimum reading is 875gm and the reading for a new tube is 1346gm or better. The tubes tested at 1400gm/1300gm & 1500gm/1700gm

Welcome! We have been one of the leading online suppliers of vacuum tubes for many years. Recently, we acquired a very large collection of tubes that we are excited to offer. We have tested and sold thousands of these tubes, and have many, many more to sell. After testing literally thousands of tubes from this collection, we have found only a small handful that did not test well. The vast majority tested strong. Buy with confidence, and if you are not happy with your purchase, you can send it back on your dime for a refund. We will combine shipping on multiple purchases within 5 days of the first auction ending. Payment must be made within 5 days or your purchase will be canceled and re-listed. We do not have the space to hold onto auctions for you for any longer than this. If you would like combined shipping, please wait to make payment until after we have sent your invoice. We send invoices each day after all auctions have ended for that day. Combined shipping can only be combined with this shop, not other shops with similar names. Thank you for shopping with us!

Groove Tubes 12AX7-M Mullard duplicate Made years ago, pulled from a Fender amp. Used very little. Tested Strong on my B&K 700 tube tester.

GT-12AX7 Groove Tubes Sovtek PairBranded Fender -Preamp Tubes- Made in Russia Test good on calibrated Mutual conductance tester as pictured. Orders will be cancelled after seven days of non payment. All tubes are tested for short circuits; tested cold and hot. -Both Sides- Combined shipping for only three orders. Ships within 24 hours after payment No local pickups

Groove Tubes 12AX7-M Mullard duplicate Made years ago, pulled from a Fender amp. Used very little. Tested Strong on my B&K 700 tube tester.

GT6L6B Pair Groove Tubes Performance Tested Branded Fender -Amplifier Power Tubes- Tested excellent on calibrated Mutual conductance tester as pictured. Orders will be cancelled after seven days of non payment. All tubes are tested for short circuits; tested cold and hot. Ships within 24 hours after payment No combined shipping No local pickups

Groove Tubes Bias Kit (with Manual) For Valve Tube Amplifiers. Manual is folded, from storage in the tube, and a little marked on the cover. Otherwise clear and usable The Groove Tubes Bias Tool is NOT a consumer device. It's an electronic service tool intended for use only by qualified electronic service personnel. A general knowledge of electronic safety is essential to the safe use of this product. Read this manual thoroughly before use. Pay particular attention to the safety precautions on page 7 before you attempt to use the Bias Tool.

GT6L6 GE Pair of Groove TubesDistortion Rated Made in the USA -Amplifier Power Tubes- Tested excellent on calibrated Mutual conductance tester as pictured. Orders will be cancelled after seven days of non payment. All tubes are tested for short circuits; tested cold and hot. Combined shipping for only three orders. Ships within 24 hours after payment No local pickups

Factory Matched Pair (2 tubes) Groove Tubes 6550-R with a 6 rating. These were only played briefly and test new on a maximatcher. They come in white box, not original packaging.

OPEN BOX GROOVE TUBES GT6V6 NOS VACUUM TUBE TESTED (CALIFORNIA). NEW OLD STOCK MADE BY RCA IN THE 50s. BRANDED GROOVE TUBE WITH RCA ETCHED 6V6 STOP SIGN. LONG LIFE INCREDIBLE TONE. COMES IN WHITE BOX. LIFE TEST PASS SHORTS PASS 750/475 ON HICKOK 752 BUY WITH CONFIDENCE. PLEASE SEE MY FEEDBACK AND OTHER LISTINGS. THANKS FOR LOOKING.

- LOT OF 4 -Groove Tubes 6550R Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!

- LOT OF 3 -Groove Tubes EL34B Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!

- LOT OF 3 -Groove Tubes 6L6 Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!

- LOT OF 2 -Groove Tubes E34LS Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!

- LOT OF 2 -Groove Tubes Fender 6L6 Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!

- LOT OF 2 -Groove Tubes 6L6S Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!

- LOT OF 2 -Groove Tubes 6550C Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!

- LOT OF 5 -Groove Tubes 6L6CHP Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!

- LOT OF 2 -Groove Tubes 6L6C Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!

- LOT OF 2 -Groove Tubes EL34R-2 Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!

- LOT OF 3 -Groove Tubes 6L6B Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!