JJ 12AX7 ECC83 ECC83S Low Noise Vacuum Tube With Box August 03 2022 I have listened to all

I have listened to all four LPs

THERE ISN'T

new in box 5GS7 tubes tested to spec on our Paul Hart-calibrated TV7/U

This matched pair of RCA black plate triple mica 6CL6 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

Tube One measured 28 while Tube Two measured 29 where minimum (65%) is 22

JJ 12AX7 ECC83 ECC83S Low Noise Vacuum Tube With Box August 03 2022 I have listened to allThis low noise JJ 12AX7 ECC83S dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and it measured a perfectly balanced 41 41 where minimum (65%) is 32 32 and 100% is 49 49. It has excellent silkscreening; excellent flashing and an O getter. Its filaments are spirally wound hence the "S" in "ECC83S" for low noise operation. I am playing it in my Pro Ject Tube Box S phono pre