What do you use for Practicing along with a backing track? 1) Amp Aux. input 2) Stereo Monitors 3) 2.1 multimedia speakers 4) ..other sources? let us know. My experience. - Amp aux input - sounds bad. - only multimedia speakers are weak and feeble. - 2.1 sounds much better, good drums and bass output is helpful for sure. Lets us know what do you use. And what should sound best.