PA-060-70 Power Supply Transformer
This is an improved Power Transformer for our Dyna-70 Ultimate Upgrade audio system amplifiers. This PA-060-70 features heavier construction with a taller lamination stack that runs cooler, provides better regulation and it doesn’t buzz or hum like some original PA-060’s did. No modifications are required to the chassis and all wires have the same, identical color code as the original Dynaco PA-060 transformer.
Our new PA-060-70 Power Supply Transformer primary circuit operates at 120 VAC @ 50/60 Hz, while the secondary features a high voltage B+ 720 VCT with 360-0-360 @ 300 mA output, a negative 55 volt bias output, (2) 6.3 VAC @ 5 Amp heater filament outputs and (1) 5.0 VAC @ 4 Amp Rectifier output.
Required for our Dyna-70 Ultimate Upgrade amplifiers to power the 3 larger 6SN7’s heater filaments, this new Power Supply Transformer also serves as the basis for our new Dyna-120 Ultimate Upgrade amplifier with enough power for 6550/KT-88 output tubes and produces 60 Watts per channel vs. our Dyna-70 Ultimate Upgrade which produces 35 Watts per channel.
This upgraded Power Supply Transformer is approximately 2 inches tall due to an increase in the number of lamination plates. This transformer is an exact drop-in replacement for all Dynaco ST-35 Watt tube amplifiers. Review the following comparison of vintage PA-060’s compared to our new, more powerful PA-060-70 on the left in the photo.
These transformers are made in the U.S.A. from materials and parts sourced in North America; we have in stock and ready for your Dyna-70 Ultimate Upgrade audio system- only $269.95.