I'm using a GK MB112 and I tried to connect the amp to my Tascam DP-008 (multi-track recorder) through the XLR direct out and the recorder did not pick up the bass. So I tried from the headphones out put on the amp to the recorder and still nothing. What am I doing wrong? Is this even possible? I tried out the headphones with the amp, that works fine, just doesn't work when connecting to the recorder.