Sylvania 2A5 Vacuum Tube Valve Shoulder Shape NOS NIB November 04 2025 The 1X2 has been revised

The 1X2 has been revised to "1X2A"

This matched pair of Sylvania gray glass 7C5 tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volt for shorts

It measured a nearly-perfectly-balanced 84/82 where minimum (65%) is 50/50 and 100% is 77/77

but their bottles are

They measured 52

Sylvania 2A5 Vacuum Tube Valve Shoulder Shape NOS NIB November 04 2025 The 1X2 has been revisedThis new old stock, new in box Sylvania 6A5G tube tested to spec on our Paul Hart calibrated TV7 U. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST OF THE TUBES WE SELL ARE OVER 70 YEARS OLD. WE CANNOT GUARANTEE FOR FAILURES AFTER POWER UP AS THERE IS NO WAY TO DETERMINE HOW TUBES WILL INTERACT WITH YOUR ELECTRONICS OR