I really hope my question is not too stupid, but who knows 
I'm thinking about getting a new preamp, but I do not own any guitaramp rack equipment, therefore I don't have a separate poweramp. All I have is my good old ENGL Special Edition.
Is it possible for me to use the ENGL's poweramp with a different preamp?! Maybe via the FX return?! What about impendance issues?!
this is the backside of the amp
http://www.houseofenglamps.com/jpg/HiRes/E_670_back.jpg
Thanks guys

I'm thinking about getting a new preamp, but I do not own any guitaramp rack equipment, therefore I don't have a separate poweramp. All I have is my good old ENGL Special Edition.
Is it possible for me to use the ENGL's poweramp with a different preamp?! Maybe via the FX return?! What about impendance issues?!
this is the backside of the amp
http://www.houseofenglamps.com/jpg/HiRes/E_670_back.jpg
Thanks guys
