Sylvania 1H4 1H4G Vacuum Tube Valve NOS NIB Tung-Sol 12V6 12V6GT great bass and sparkling highs

great bass and sparkling highs and the alto sax cut through the air without a hint of stridency

5 inches and the shaft is approximately one inch high with a diameter at its widest of 1/4 inch

new in box Sylvania 14Q7 tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube One: 44/48

short bases

Sylvania 1H4 1H4G Vacuum Tube Valve NOS NIB Tung-Sol 12V6 12V6GT great bass and sparkling highsThis new old stock, new in box Sylvania 1H4G 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