Matched Quad RCA 6CL6 Vacuum Tubes Valves RCA Victor LSP-4717 These ten new old stock

These ten new old stock

Both tubes have thin cracks in their bases

This pressing has light surface noise audible in quiet passages and barely audible in voice-level passages

new in box milspec RCA 12SG7 JAN-CRC-12SG7 tube tested to spec on our Paul Hart-calibrated TV7/U

This new old stock-testing Sylvania 6L6GC was tested on our Maxi Matcher 2 for shorts

Matched Quad RCA 6CL6 Vacuum Tubes Valves RCA Victor LSP-4717 These ten new old stockThis matched quad of RCA 6CL6 tubes were tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured (From left to right): 42, 42, 42 and 45 where minimum (65%) is 30. 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 YOU NEED OR HAVE ANY