United Electron 31LQ6 Vacuum Tube Valve NOS NIB October 10 2024 This Groove Tube GT-ECC83-S /

This Groove Tube GT-ECC83-S / ECC83 / 12AX7 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

gas and transconductance on our Paul Hart-calibrated TV7/U and measured as follows:

steel plates and steel support rods

new in box United Electron 31LQ6 tube tested to spec on our Paul Hart-calibrated TV7/U

This book -- and its dust jacket -- is in very good condition

United Electron 31LQ6 Vacuum Tube Valve NOS NIB October 10 2024 This Groove Tube GT-ECC83-S /This new old stock, new in box United Electron 31LQ6 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 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 QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS