Sophia Electric of Virginia, USA is introducing model 91-01 300B mono-block single ended tube amplifiers.
Designed by Dr. DWU and Richard Wugang, father and son, hand made in Virginia, USA.
Circuit: Single ended 300B amplifier without feedback.
Transformers: Designed by Dr. DWU, made in house by Sophia Electric.
Price: $3500 per mono-block pair without tubes, or $3995 per pair with Sophia Electric Princess 300B mesh plate tubes and vintage NOS driver tubes.