Ejlif may be onto something. I looked at a classified for the Parasound pre-amp and it said "one line input switchable to MM phono". If you are connected to the phono input and it it switched to "MM phono", you may have 2 phono pre-amps connected in series. An easy way to test it is to simply move the RCA interconnects from the phono input on the Parasound to any of the other line level inputs (Aux, CD, TV, DVD, etc) and try it. If it works, you know the problem is with the phono input on the Prasound. From there you can investigate how to switch off the built-in MM phono pre-amp in the Parasound.
Or, you could read the manual to see if you can figure out how to simply turn off the phono pre-amp in the Parasound.
BTW, I'm not familiar with the Parasound pre-amp, just guessing based on the verbiage from one of the classified ads I saw........
Enjoy,
TIC