Electrical:
Mechanical:
SST-TDR Details:
A completely unique output transformer design that is the "missing link" between the late 50's 5E3 108 to the early 60's 125A1A transformers. Higher fidelity than the 108, yet more mid forward than the 125A1A, the SST-TDR output is a secret weapon for boutique amp builders around the world.