Hello all, I'm looking to buy an IEM for my father for Christmas.  My price range is $100-200 USD.   He mostly listens to rock, everything from 80's hair metal bands to pink floyd and 90's alternative rock. His needs are:   1) Good isolation-  (My dad commutes 2 hours a day via bus for work)...

Hello all. I'm having a problem with distortion in my audio, as fellow hi-fiers, I'm asking for your help please! Current Home Rig: Balanced> Sennheiser HD650 > Little Dot MKVII+> Matrix Mini-I Dac via USB   Through my balanced amp, there is no noise. However, when I use the 1/4th single...