pioneer deh-80prs max volume no distortion.

[99blazer]

Well I got my dd-1 in the mail to today. I tried to find the max volume on my head unit (80prs) and couldn't even get a signal. so I did it through the amp which concerned me because I do use an eq that has a line driver but I followed the rest of the instructions and I got everything where there is no distortion at full tilt. but I am still concerned on the head unit thing since I am using a line driver. any thoughts on this?

[fox_racin4]

all pioneer HUs are like this

i use volume 50 to set things up that way i have some head room for the songs that are recorded quiter