14% of 203 verified Moondrop Chu IIowners don't recommend it, and 3 describe specific problems — based on real owner comments from Reddit, enthusiast forums, and YouTube.
For balance: 63% recommend it. This page collects the complaints so you know what you're signing up for — read the full owner report for both sides. How we score
“I am sad that the neutral signature has been replaced”— @daylightsensor8695 on YouTube
“These EQ app does not work with iOS.”— @Valixey on YouTube
“no spring tips :(”— @pikachu-dr1vs on YouTube
“I felt the treble is over and distorted in some songs.”— @powerfulkingpk on YouTube
“Mines came with a defect on the cable, and one of the sides mutes until I jiggle with the connection and it starts sounding again. A pain in the ass.”— @mlarry90 on YouTube
“I'm using this but after 2 weeks somehow the settings was changed, like when i record a game the audio can't be recorded or no sound video”— @amarrullah8351 on YouTube
“they aren't on the Chu 2s, moondrop needs to add them back”— @Policepigeon on YouTube
“I then bought the Moondrop Chu II ($20) to see how low I could go. These were much more compressed and less fun. I think you will be disappointed if you start in this price range. I was.”— In_Flanders on Reddit
“I have Moondrop Chu II's and when I adjust in my chair, I hear static electricity in my ear and then my monitors will both flash black for a second or two. It has been going on for about two months (ever since the weather got cold).”— davcor21 on Reddit
“Moondrop chu II has really bad quality control issues and it’s known to have channel imbalance after a while due to nozzle clogging.”— Patient-Ad2803 on Reddit
“The Moondrop Chu II. Besides that the Chu 2 loves to fall out of my right ear with the L stock tips, the sound out of it is so boring. To me, the EDC Pro is everything the Chu 2 should have been.”— friday1970 on Reddit
“Out of the box these sound horrible. Everything sounds muffled and low quality and it feels way worse than something like the kz castor that sounds more accurate to my headphones.”— Man_I_Hate_This on r/iems
Not complaints — practical notes from owners that didn't affect the score.
“For my moondrop Chu II, it was the mesh filter that had gotten wet with my ear moisture (icky, sorry). Removing the mesh and replacing with a bit of cotton solved the issue.”— No-Courage-2053 on Reddit
“I fished the Chu II out of the drawer and tried them with Amir EQ and different ones based on other measurements and I noticed that they respond well to EQ changes unlike some other IEMs i have.”— muza_1 on Audio Science Review
“So yea, its not all great news however. I live in a pretty humid area therefore corrosion and the chances of it reoccurring is pretty high”— PaleontologistSad870 on r/inearfidelity
“If you take good care of the Chu 2, it should last you a long time. I have several sets that I use regularly.”— RudeRick on Reddit