I picked up a princeton 112 plus pretty cheap at a thrift shop today. Honestly, it's not completely terrible and its light which is nice. However, I kind of want to have some fun with this amp. I noticed that it had a power amp input on the front. Could I buy a pre amp pedal, like the doctor Roberts, throw in a celestion blue, and use that set up to get a competent vox UL730? Or maybe build a HH preamp, throw in a greenback, and get some marc bolan tones? Can I use the amp like this and what are your thoughts?