Some power banks have 'smart' port that can detect what is being connected and tried to enable fast charging (namely Power Delivery or Qualcomm QC), which can interfere with USB dongles.

My magic stickers can make anything Hires in a jiffy.

Having owned both W4 and DC-Elite, I too find that neither one really beats the other. Sure there is some difference in their sound signature, but it is more of an issue of presentation style rather than any technical superiority. There are certain aspects that DC-Elite are better at, and the...

Do a battery runtime test. This is the listed spec: Playback Time about 12hours (Standard : FLAC, 16bit, 44.1kHz, Vol.50, LCD Off, Normal Gain) Uses a 16 ohm headphone to run the test and see if you can get at least 10hrs out of it. If you still get much less, then Ill suggest you contact...

Skip the E6, perhaps find something a decade more advanced.

I am not an Apple Music user so this could be wrong - there is a difference between a streaming app ability to stream Hi-res music directly to a smartphone's hardware (aka native playback) and its ability to output Hi-res music over USB. The latter will require the app has an USB output driver...

Not really. IEM profiles are supported since the original W1 / W2 series. It is under 'SDF' setting.

Definitely do an update, there are quite a few bugs in the older firmware.

My first impression is here: https://www.head-fi.org/threads/the-tws-neckband-bt-cable-adapter-thread.920709/post-18086829

Moondrop EVO is in, so here is some first impression: 1) Case is big, bigger than iFi Go Pod. 2) BT connection is not particularly stable, even when running on SBC mode. Likely an issue of early firmware and can be remedied by firmware update. 3) Shallow 2 pins don't fit my deeper 2 pins...

Last I checked I think only iPhone with Type C port can powered the KA17 desktop mode without external power.

Should get mine in less than a week, will share my impression then.

Moondrop released EVO, priced around US$70 or so.

If you recognized these, you are certified old fart in the forum.

Digital filter is like seasoning, everyone has his/her own preference. You can only find what 'taste' best for you by trying them all out by yourself.