I'm just curious, I bought a chromebook strictly for streaming radio stations and listening from YouTube & our music forum here. I'm using a 3.5 to RCA's cord directly to my preamp. Now I've discovered all the music available with my Amazon prime membership. So far streaming radio everything sounds pretty darn good. I'm going to try the Amazon music service next, looks pretty neat. So I'm just wondering now if I need a DAC ?......Say between the chromebook and my preamp, or am I fine with the 3.5 cord the way I'm doing it. I guess what I'm asking is would there be any improvement with one. TIA.