Amazing sounding dynaco ST-70 upgraded.

New filter capacitors hidden underneath keeping the original can on top. At some point the driver board was replaced with a different version. This one uses the later 6gh8a driver tubes which test good. It has orange drop coupling capacitors with newer resistors all testing good. Siemens EL34 tubes handle the output duties. Bias has been set.

At some point in its life someone tried to clean the chassis with fine sand paper or steel wool so it is a little dull but still polished up nicely.