JJ 12AX7 ECC83 ECC83S Low Noise Vacuum Tube With Box Berman Plays Liszt 5 Shipping $80

5                                                                                                                      Shipping $80

They have double O getters

This matched pair of RCA-MANUFACTURED 6K6GT tubes was tested on our Maxi-Matcher 400 volts on the plates and a bias of -36 volts for shorts

new in box Siemens EBF89 / 6DC8 tube tested to spec on our Paul Hart-calibrated TV7/U

JJ 12AX7 ECC83 ECC83S Low Noise Vacuum Tube With Box Berman Plays Liszt 5 Shipping $80This 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 an almost perfectly balanced 48 47 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