cagix
Head-Fier
Iam czech i need time to think in english. I can say more for rules. I know old hifiman re0, sony mh 1c phonak audeo, ibasso it 03. What can say is this. You can when add something on filter doit warmer, darker, smoother efect. Yes it is true but also true is when you doit iem lost clearness, clarity it is muddy. I have experience.