Blackwolf14
New Head-Fier
Thank you for the answer. I agree with you. I didn't notice that when the earbud arrived me. After a couple month the issue appeared.I bought the RY4S plus and 300 ohm versions (both MMCXed), no issues with channel imbalance. Well CHIFI is not a paragon of good QC, so sometimes it is a crapshoot for QC control for their cheaper gear (and even sometimes more expensive gear).
Also I would to say something about B40. I paired my phone and B40 and I enjoy listening to music with EQ. In my humble opinion, B40 and ME80 without EQ its too flat for me. RY4S is more detailed, energytic. I have basic tools: Spotify, Vention usb sound card and DD TC35. Maybe both earbuds(B40 and ME80) needs to drive.