Amperite 3TFV4 Ballast Tube NOS NIB Stereo PPSD-98009 new in box RCA 13GF7

new in box RCA 13GF7 13GF7A tubes tested to spec on our Paul Hart-calibrated TV7/U

This Zaerix 6CU7 / ECH42 tube tested to spec on our Paul Hart-calibrated TV7/U

sounds about as good as 78s ever do

This matched pair of RCA-MANUFACTURED 6K6GT tubes was tested on our Maxi-Matcher 400 volts on the plates and a bias of -36 volts for shorts

Amperite 3TFV4 Ballast Tube NOS NIB Stereo PPSD-98009 new in box RCA 13GF7This new old stock, new in box Amperite 3TFV4 ballast 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