Different sound from inputs 1 and 2 on preamp


Does or has anyone observed that there is difference in sound between different imputs on the same preamp. I have discovered that with my Pass X1 my input balanced 1 sound different from my input balanced 2. They both sound good but they sound different.Is this normal and has anyone else noticed differences between their inputs sonically on their preamps.
mitchb
I've noticed it...on my Counterpoint SA-5000 the tape 1 input has one less switch in the path than the CD, tuner, etc. On other preamps I assumed it was because I used channel 1 often and burned it in, but didn't often use the others.
I never switched to Jack Daniels, still drinking Jim Beam but changing the preamp did eliminate the input differences. In my case, the differences were of soundstage and image specivity not a frequency type change.