Matched Trio Sylvania Silvertone 22DE4 Vacuum Tubes

Matched Trio Sylvania Silvertone 22DE4 Vacuum TubesThis matched trio of Sylvania MANUFACTURED, Silvertone BRANDED 22DE4 rectifier tubes both tested 71, 72 and 74 on our Paul Hart calibrated TV7 where minimum (65%) is 50 and 100% is 77. You'll be able to retube your Cayin HA 6A 5K with a spare tube just in case. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT

rectangular mica spacers and exlellent flashing

Both tubes are exactly-the-same on the inside while Tube Two's bottle is approximately 1/4 inch taller than Tube One's

new in box GE 8CG7 / 8FQ7 tubes tested to spec on our Paul Hart-calibrated TV7/U

I do not recommend them for applications with vibration

I welcome testing suggestions

48 and 48 where minimum (65%) is 40 and 100% is 62

46 and 49 where minimum (65%) is 30 and 100% is 47

This new old stock-testing matched pair of milspec RCA metal bottle JAN-CRC-6V6 output tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volts for shorts

new in box Osram N108 tube tested to spec on our Paul Hart-calibrated TV7/U

Tube One measured 75/77 while Tube Two measured 79/76 where minimum (65%) is 50/50 and 100% is 77/77

It took two adapters but was worth it as all six sounded fine in my Mini 2013

These five GE 25L6GT tubes were tested on our Paul Hart-calibrated TV7/U for shorts