I've been attempting to create a compact system for my kitchen diner. I've purchased a topping tp30 amp and monitor audio bx1. The sound through a CD player is very impressive for the £160 its cost me. However I bought this with the plan of using a smartphone and built in DAC. The problem is it really doesn't sound very good. I've been using tunein app at 320 bitrate. I'm no audiophile but I can instantly notice the deteration between the 2. To you think it maybe some issue with the DAC?