RCA Black Plate 7AU7 Vacuum Tube For Schiit Vali 2 RCA JAN-CRC-12SW7 This matched pair of RCA

This matched pair of RCA 6AK5 tubes was tested on our Paul Hart-calibrated TV7/U

This EP is a music sampler recorded in Soviet-occupied Lithuania in 1963 featuring Shostakovitch

Three links are available

perfectly-matched pair of GE 6SJ7s was tested on our Paul Hart-calibrated TV7/U for shorts

RCA Black Plate 7AU7 Vacuum Tube For Schiit Vali 2 RCA JAN-CRC-12SW7 This matched pair of RCAThis RCA Black Plate 7AU7 tube was tested on our Hickok 600A for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 1950 1850 where minimum (65%) is 1430. This tube has 18 MM black, ladder plates; crenelated mica spacers; a slant D getter; steel support rods copious flashing. I have played it in my Schiit Vali 2 headphone amplifier and it sounds outstanding. It is dead quiet when the preamp is muted and has