The converters for Mills Violano Virtuosos generally came in three
different ratings:

1. The Single Mills used a 2.0 ampere converter.
2. The Double Mills used a 2.5 ampere converter.
3. The Double Mills with drum cabinet, which is what I used to have,
used a 3.0 ampere converter.

A Single Mills with a drum cabinet would probably have used a 2.5
ampere converter, but as I've never seen one of these models I can't
say for certain.

The converter for the Mills Magnetic Expression Piano that I had was,
I believe, a 2.0 ampere model.

Hal Davis

 [ Mike Ames mentions that the DC output polarity of the converter
 [ can change from one starting to the next.  A diode bridge could
 [ be added if needed, to ensure consistent polarity.  -- Robbie