Well I didn't imagine yellow ear tip fit test, almost 50% less bass with ANC off, distortion in left bud with phone calls and that the new ones got more bass overall... maybe the difference in ANC is more difficult to compare from version to version. My first impression when connecting the replacements with 2B588 was that the ANC is better with these.I also kept looking around if / when we will get a new FW update and so far nada ...
to be honest, I did not really notice any change until I read about the issue ... sure enough, now i 'think' i hear the difference ...
to play devil's advocate a bit ... here an interesting article from Forbes on the issue
Anyway, I'm 100% sure that the 2C54 firmware ruined my APPs, and am happy I got new ones. Now I just hope my deposit of $200 will be paid back in full
On a side note, I tried my cheap foam tips I got from Ebay and the (so called) high frequency warble is being noticably limited. Almost completely gone. Sadly they are just a tad too small for my ears, so I have to wiggle them a little in place to get a good seal. (ref. both good bass and green ear tip fit test)
Last edited: