Tung-Sol 6SD7 6SD7GT Vacuum Tube NOS NIB A M Records These six US-made 5U8 tubes

These six US-made 5U8 tubes tested to spec on our Paul Hart-calibrated TV7/U

Physical Characteristics:

I am playing it my Musical Paradise MC-3 single-ended integrated amplifier as I write with Aimee Mann's seminal "Magnolia" album and it sounds terrific

This trio of RCA 6K7 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

tall bases

Tung-Sol 6SD7 6SD7GT Vacuum Tube NOS NIB A M Records These six US-made 5U8 tubesThis new old stock, new in box Tung Sol 6SD7GT pentode tested to spec on our Paul Hart calibrated TV7 U. I am playing it my Musical Paradise MC 3 single ended integrated amplifier as I write with Aimee Mann's seminal "Magnolia" album and it sounds terrific. This tube has great bass and sparkling highs and Mann's voice is warm and clear as a bell. It is a bit microphonic, but this was no issue with the amp at full volume and when actuating the amp's