Matched Quad Philips Miniwatt PCF80 9U8 Vacuum Tubes Brimar NOS NIB These five GE 6BL8 tubes

These five GE 6BL8 tubes tested to spec on our Paul Hart-calibrated TV7/U

They have top D getters

I am playing it in my Pro-Ject Tube Box S phono pre-preamplifier (tube on right) with John Mayall’s seminal "The Blues Alone" album

new in box Philco 3AL5 tube -- and several others just like it --tested to spec on our Paul Hart-calibrated TV7/U

This matched pair of RCA 6K6GT tubes was tested on our Maxi-Matcher tube tester with 325 volts on the plates and a bias of -36 volts

Matched Quad Philips Miniwatt PCF80 9U8 Vacuum Tubes Brimar NOS NIB These five GE 6BL8 tubesThis matched pair of Philips Miniwatt PCF80 9U8 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 80 66, 80 70, 80 70 and 82 70, respectively where minimum (65%) is 57 57. 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