User Feedback for Sophia Electric™ 300B Mesh Plate Tubes - By Mr. Perucki from Pennsylvania (2003)
Thank you for the 300B's. The amp (see attached picture) has been working for a couple of weeks and it is fantastic. That blow glow is fascinating. As it turned out, the tubes are running at Vp=400V and Ip=80mA. I know this is high and I will soon lower both.
I can't tell you how much I appreciate your business. I know how small the DIY tube audio business is and I feel lucky to have a great supplier like yourself.