Well, now having the Qudelix 5K, have to say that the PEQ works pretty nice and flawlessly. Hope to fiio upscale their future amps
I had stumbled across that DAC on Amazon while looking at options....good to know the EQ is that good.
I think that woudl be more of an upgrade to the BTR3 and for sure better than the BTR5, just by looking at specs.
And far more sane a price tag too.
If only Fiio had made a newer/upgrade to the awesome E17K DAC.
The onboard on the fly adjustments is what i want.
Sure, it does not have a EQ, but that does not mean u can't make a better version that has onboard adjustments, along with can connect to the Control app.
I have tried to find other USB dacs, but all i see in Fiios line up is DACs that only have Bass Boost switch, that adds a hard set db boost, often 5 to 9db. that is often way to much at times, with the E17K i can adjust bass and treble from -10 to +10, directly on the DAC.
(I just recently tried a Fosi Audio DAC-Q4 which has bass/treble knobs, but its bass is more tuned for mid to high bass range, and makes the overal sound muddy and a tad hollow feeling.)
My BTR3 is used in USB mode and its EQ is tuned to use on one single specific pair of in ears, since it is not possible to on the fly change the EQ...that the major disadvantage I am finding for these smartphone controlled DACs,...u have to pair the dac via BT to a phone, load up the app, and manually change the EQ each time u want to use a different set of headphones.
Fiio does not even have saved custom presets option in the app. it is only just one Custom, that u have no option to "save" so that when u do mess with it, u can not revert it back to your saved settings.
Since I use Poweramp app to play my high res music, its EQ and profiles can not be beat.
I only want the DACs EQ on when i am not using PowerAmp for my music, but when i am watching videos in streaming apps, and such things and apps that do not have any EQ ability.
That is why i have my set EQ tweaked BTR3 only for use with my in ears and only use it on my Nvidia Shield TV for movies and tv.
It is not powerful enough to drive my full sized, so if i really want to use those, i connect my E17K.
However, i can't use full sized headphones for more than 15 min or so, due to the compression pressure, and the heat build up in my ears, they get very uncomfortable, so its in ear use for long things.
I really do not care about Bluetooth anymore. I had swore by LDAC for ages and used my BTR3 on LDAC for good time(as well as a few sets of Sony LDAC headphones), but when Nvidia broke LDAC with an update to the Shield, and took nearly a year to fix it, i was forced to wire up things for USB DAC mode, and my god, i will never go back. quite the difference in quality wired vs BT. But i do read that there are some new BT audio codecs in the works, that may greatly boost the quality of wireless audio transmission abilities..