Just curious if I could send an Ampeg PF-20T into the effects loop of my SWR Workingman 4004 and use it as a preamp? I have found a PF-20 for sale for $400 Canadian price new is $749 Canadian plus tax. It seems like a good price. My hesitation is that I am having trouble justifying spending $400 on a amp head that I will only use 3 to 4 times a year we record, as 20w will be fine for recording purposes but it won't cut in a live situation, but if I could use it like a preamp pedal like the VT, BDDI, SCR-DI than it make the purchase totally worth it. So is this possible?