I received my blue AP80 few days ago from Amazon, and wanted to share my positive (so far) experience with this tiny DAP (even though I fully understand the anger and frustration of early backers still waiting for their order. Hidizs communication have been very poor for weeks).
The AP80 UI is very smooth and works flawlessly. I quickly got used to it. 1.0.1 beta firmware was pre-installed. I own a Fiio X5 III and it’s always been pretty slow (even turning it on was a real pain). AP80 installation on Win 10 computer was hassle-free, as DAC or storage. Files transfer speed is much greater than with Fiio (which is not always detected by PC). I’m using a 400 GB Sandisk micro SD card, with FLAC files. No problem with artwork, tags. Pictures on AP80 screen are crisper and brighter than on Fiio. Touch screen is fast, no need to tap twice (vs laggy Fiio…).
Sound quality is fine, I’m using Meze Classic 99 & Grado SR325 headphones, as well as Sennheiser IE80 IEMs.
About the wobbly volume knob: it can slightly move towards left or right but I think this might have been done on purpose (I could be completely wrong!): if you try to to turn the wheel with one finger only, it moves sideways, but it doesn’t spin. You need to hold it between two fingers to turn it properly. This might look like something annoying, but it prevents accidental change of volume when grabbing the AP80 from your pocket... Or maybe it’s just cheap QC!
Minor "issues" which I hope can be fixed with future firmware:
- I’m using AP80 on its own but also as a transport, paired with iFi micro iDSD. The (USB C) output volume is not fixed, which means I have to turn it to the max on AP80 (or at least to a fairly high level). Since the line output can be fixed, it would be cool if the USB C volume was too.
- iDSD must be turned on BEFORE connecting the AP80 (and AP80 must be switched off before disconnecting iDSD), otherwise the AP80 crashes. Crash resets time and date. Actually, this might be a problem with iDSD, as when turned off it "sees" whatever is connected via USB as a source of power, so maybe it drains current from AP80, which causes crash.
- I wish all audio players could sort music this way (Foobar app does it): genre/artist/album NOT just genre/album.