Sylvania 5Y3 5Y3GT Vacuum Tube Black Plate April 28 2025

Sylvania 5Y3 5Y3GT Vacuum Tube Black Plate April 28 2025This Sylvania 5Y3GT black plate rectifier tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 52 48 where minimum (65%) is 40 40 and 100% is 62 62. This tube has a top O getter; chunky, shiny black plates; mediocre flashing and 395 739 date codes. Im playing it now in one of my Radio Craftsman mono blocks and it sounds great. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF

new in box GE 12AX4 tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube One measured 29 while Tube Two measured 31 where minimum (65%) is 22 and 100% is 34

matte-black plates

I can't tell you how they sound as we don't have any equipment that runs them

only an occasional pop or tick

medium bottles and excellent flashing

new in box RCA 12HG7 / 12GN7 / 12GN7A tubes tested to spec on our Paul Hart-calibrated TV7/U

I am playing them as I write in my Sound Craftsmen SC-2 mono-block amplifiers with Neil Young's "Harvest" and they sound outstanding

6 volts on the filaments

new in box RCA 6DN3 tubes tested to spec on our Paul Hart-calibrated TV7/U

This matched pair of Sylvania-MANUFACTURED 6X5GT rectifier tubes was tested on our Paul Hart-calibrated TV7/U for shorts

WE CANNOT GUARANTEE FOR FAILURES AFTER POWER UP