4 Sylvania 5Z4 Vacuum Tubes Valves Rectifier Lot Of Four The Cultures Of This lot of eight US-made

This lot of eight US-made mesh plate type 36 tubes tested as follows on our Paul Hart-calibrated TV7/U:

Enhanced Cooling: yes

This trio of US-made 6X4 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

60 and 82 where 40 is minimum

It is dead quiet when the preamp is muted and has excellent frequency response even though this amp was designed for 6SN7s

4 Sylvania 5Z4 Vacuum Tubes Valves Rectifier Lot Of Four The Cultures Of This lot of eight US-madeThese four Sylvania 5Z4 rectifier tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. They tested 46 52, 49 47, 51 51 and 52 52 respectively, where minimum (65%) is 40 40. 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