Matched Pair Sylvania 7B7 Vacuum Tubes Valves

This matched pair of Sylvania 7B7 tubes was tested on our Paul Hart-calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 31 for Tube One and 32 for Tube Two where minimum (65%) is 43 and 100% is 66.15. These tubes test below minimum, but should be fine in non-critical applications. They have mica snubbers for increased vibration resistance and lowered microphonics; great flashing and B9B and I7B codes on the tops of their bottles. BECAUSE OF THE BIZARRE, INTRUSIVE AND DRACONONIAN GERMAN PACKAGING REGULATIONS -- AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM -- WE NO LONGER SHIP TO GERMAN ADDRESSES FROM JUNE 1, 2022. WE WILL HAPPILY SEND YOUR PACKAGE TO A NEIGHBORING COUNTRY OR MAKE SUITABLE ARRANGEMENTS. IN 2021 WE PURCHASED 150,000 VACUUM TUBES. IF IT'S NOT LISTED, WE PROBABLY HAVE IT. PLEASE ALSO SEE OUR ETSY SISTER SITE "LOWTECHTWOO" AND/OR CALL OR TEXT US AT 202-372-6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAV