Hi, I hope everyone is doing ok. I have a question relating to the element x volume settings. sometimes use the matrix element x in my 2 channel system plugged directly into a Pass Labs stereo amplifier. I realize that my question may be a little off topic for headphones, but I'm hoping for guidance. I would be using the element x as the pre-amp and volume control. (The Pass Labs amplifier does not have a volume control.) I'm not clear as to which pre-amp setting to use on the element x. The element x settings are 0dB Fixed (I think for use only if an external pre amp is used), fixed 0dB ADJ, and 10 dB ADJ (+10dB gain, attenuation adjustable). Thanks for your help.