Sylvania 5Y3 5Y3GT Vacuum Tube Black Plate April 28 2025 I am playing them as

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

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

matte-black plates

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

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

Sylvania 5Y3 5Y3GT Vacuum Tube Black Plate April 28 2025 I am playing them asThis 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