Hi Fiio Team,
I recently purchased FiiO BTR7 Android version (upgrading from my BTR3K). I am very pleased by its soundstage and volume but apparently there are quite a few software issues that are starting to take away the experience. I have already factor reset the device twice but it doesn't help. also, I'm on the latest firmware version as checked in the FiiO Control app. I am currently using it with my Samsung S22 Ultra and Sony Xperia 5 III (both on Android 12 using Poweramp music player latest app from playstore; set at 192KHz and 32-bit audio sampling).
1. When I play music for the first time connected via USB-C to phone, the audio works perfectly fine. But upon pausing the music for a few seconds in the app and/or opening another app (e.g Insta, youtube) which takes over audio from the previous app, the BTR7 play audio like a robot and misbehaves a lot. There is lot of static noise and I ALWAYS have to disconnect the cord and reconnect it. Then it plays just fine until this whole thing gets repeated. It happens many times a day and is quite frustrating honestly.
2. When playing the audio at 50-60% volume in the phone (BTR7 is set at 60), the BTR7 cuts off many frequencies for soft/low sound in the track and it seems like it is applying some sort of a filter to cut-off noises/silence and it plays audio in cuts until the signal in the track is loud enough to avoid that; as if some noise-cancelling is happening in the background which cuts audio waves below a certain threshold. This is very frustrating for soft music that one plays at 50-60% volume in the night and cannot hear many subtle tunes because of that. It seems to only happen when connected over USB-C to the phone. When connected over Bluetooth mode, it works fine (probably because it adds some noise which it treats like a signal and hence doesn't cut it out).
Kindly prioritise fixing those two issues as it is seriously frustrating and takes away the entire experience of it being "premium".