I talk about here in this thread; HIFIMAN HE400i vs Sennheiser HD58X
very simple and cheap mods but do a lot combined with pad roll to change the sound of the headphone for the better imo.
I talk about here in this thread; HIFIMAN HE400i vs Sennheiser HD58X
very simple and cheap mods but do a lot combined with pad roll to change the sound of the headphone for the better imo.