General Electric GE 25Z5 Vacuum Tube Valve NOS NIB

General Electric GE 25Z5 Vacuum Tube Valve NOS NIBThis new old stock, new in box RCA 25Z5 tube tested to spec on our Paul Hart calibrated Hickok 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 UP TO

It was made in the Soviet Union and sounds better than many Free World LPs

new in box Zenith 6HA5 / 6HM5 tubes tested to spec on our Paul Hart-calibrated TV7/U

50                                                                                                                      1 6AE7: $7

This matched pair of Raytheon black glass 6V6GT output tubes was tested on our Maxi-Matcher 2 at real operating voltages of 400 volts on the plates and a bias of -36 volts for shorts

microphonics and transconductance

Sylvania-BRANDED 8BQ5 tube tested to spec on our Paul Hart-calibrated TV7/U

31 and 39 where minimum (65%) is 23

It measured 52/48 where minimum (65%) is 40/40 and 100% is 62/62

new in box GE 6CG3 / 6CE3 / 6CD3 tested to spec on our Paul Hart-calibrated TV7/U

Tube one measured 30 in its triode section where minimum (65%) is 25 and 100% is 38

Zenith-LABELED 6LF6 tube tested 70 on our Paul Hart-calibrated TV7/U where minimum is 54 and new is 100

new in box RCA 6AD7G tube tested to spec on our Paul Hart-calibrated TV7/U