Denon dl103 low volume from sa3000
I am running a denon dl103 cartridge through a counterpoint SA 3000 preamp. When I run the phono cables directly into the MC input on the sa3000, I need to turn the volume up to about 75% to reach satisfactory listening levels. Will this cause any problems? I have a home built SUT built with beyerdynamic trannies and with that I am at about 35-45 % on the volume for the same listening level. It just seems I have a more quiet background with the SUT out of the loop. Main question is will I cause any damage to the preamp running the volume up to 75-80%. The SUT was built correctly, ie solder joints and grounds are all correct. I just want some input on running the volume up to such a high level.