Richard,
I play my Profex II through an Evans amp (FET 500LV; 15" speaker)...but it should be the same hookup.
Steel Guitar (from volume pedal) into the INPUT (front) of the Profex II; then connect the OUTPUT of the Profex II (left for mono to get both output channels) into the FRONT of the amplifier.
You will still have to adjust (or 'tune') your amp's tone and sensitivity controls. Tune these to your liking. Use little, if any reverb, since your Profex settings probably have reverb in them. Your Profex headphone jack will not include any modification of the signal provided by the amp itself.
I have been doing this for several years. It's simple and I like the result.
Best regards,
bUd
[This message was edited by Bud Harger on 30 September 2006 at 09:01 AM.]