4 Sylvania 5Z4 Vacuum Tubes Rectifier Lot Of Four Columbia Harmony It is dead quiet when

It is dead quiet when the preamp is muted and has excellent frequency response and dynamics even though it tests poorly

This offering is for 3 subminiature X-ray suppression shields suitable for 6AU6-size tubes

It is MM wide from the extreme left to the tip of the winding stem on the right

new in box RCA 6GE5 tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube Two measured 48 46 56

4 Sylvania 5Z4 Vacuum Tubes Rectifier Lot Of Four Columbia Harmony It is dead quiet whenThese 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