Replacement for choke in Dynaco ST70, MK2, MK3 and MK4.
Dimension: 1-1/2 inches (38.1 mm) tall on 2-3/8 inch (60 mm) mounting hole centers.
Electrical characteristics: 55 ohms, 1.5H, 10% tolerance, 2500 volt DC hipot tested, 200 ma DC. The maximum ripple voltage 35V @ 120 Hz.