I just finished building my Crack with Speedball and it worked perfect on first power-up! However, I am typically having to keep the volume knob at about 60-70% for "normal" volume levels. I have also set the pre-out from my PC at 100%. I am using an Emotive XDA-2 DAC, and Sennheiser HD650 phones. Is this normal for this setup? I saw others having the opposite problem - needing more attenuation. I seem to need to need less.