For new users, please read about PerfectDynamics 2.0 Sound Optimizations first for new improvements with Fidelizer ROMs. I’ve been trying to update PerfectDynamics 2.0 update on iBasso DX50/80/90 for a long while. Whenever I tried to start updating one, new ROMs and updates keep coming out. So after porting iBasso DX220 ROM to DX200 device, I decided to…
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