I have a direct out (transformer balanced XLR) from my Ampeg-SVP Pro preamp that may be having a problem. I have been using it as my direct line for years without trouble. At our last gig the soundguy complained that he wasn't getting a good signal from me so he hooked me up to a house direct box and all was fine. He never seems to be happy unless he is complaining about something or acting as a hero by fixing his outdated system so I didn't pay his complaining much attention. Since then I have decided to check things out a little just to make sure my equipment is healthy. I tried hooking the direct out from the SVP directly into my power amp (Ashley FET-2000M) and I have no signal (works fine from the preamp outs). Should this work or does the signal need to run through a mixer to have a strong enough signal for the power amp? I figure that it should work but I have never tried it and just want to double check before I send it out for repairs.....and before it is suggested I will add that the cables I used are good. Thanks in advance.