when i turn on my car and the music starts its low for a second and then once the amp gets more power the volume jumps up.

if i'm understanding you correctly, this is a feature of the empeg player software. when you power up the car, and the empeg completes the boot process, it is supposed to ramp the volume up smoothly to the level you had it set when you powered down. the idea is that if you powered off with the music cranking, the volume ramp gives you a moment to catch it and reduce the volume before blowing your ears out (or your passenger's ears!) .

there is a bug in 2.0b13, though, that causes the volume ramp to not be very smooth. instead of a steady ramp, it really only sets the volume to 2 or 3 distinct levels before hitting the final output level. so, you end up hearing a jerky increase in volume as you describe. i believe this is fixed in the next release.

--dan.