Unless your amp has line-level, aka preamp, outputs, which is rare these days, I think that powered speakers are not what you want. It sounds like you are wanting to run your amp's powered outputs (typically banana-plug) into these JBL's, which would destroy the JBL's, when what you need is a headphone out or preamp out. The DAC you linked does have volume control, so if your only audio source is your computer, then you could bypass your...
