That's not the firmware for DC03Pro. That's just the Window's USB driver and most of the time you don't really need to install it for DC03pro to work as it should have been auto-detected by Windows and use Windows internal driver instead.

If you referring to the digital filters (Minimal Phase, Fast, Slow, etc) - those can't be disabled. They are part of the ESS DAC chips internal oversampling process for decoding digital signal to analog sound. You can only pick which to use, but there is no option to bypass it.

Yes, iPhone are notorious for limiting the power supplied over its Lightning connector (Type C iPhone usually have much less of such issue as Apple needs to adhere to USB standard). For example, most Lightning iPhone limits output voltage to around only 3.3V (as opposed to 5V in USB). Sometimes...

Yes and No. Yes as in you can use X7s as a pre-amp to SP200 without causing any fire/explosion. No as in you might not be getting any of the 'Class A sound' from X7s. Class A means the amp section is running in Class A mode, but given you are using it as a pre-amp, where the analog music...

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.

You are correct that it is a hardware limitation. FC6 uses NJU72315 volume control chip and it offers 0 to -62dB control via 2dB steps, meaning it is 31 steps total.

Perhaps I should be more clear - I am not saying it isn't possible to up-convert the power rail above +5V / -5V, but the higher it goes, the more difficult it will be. to keep the circuit in reasonable size/complexity to maintain a clean power. The way FiiO partially solves this issue is by...

Voltage swing determine how loud the headphone can get. However, don't forget KA17, even when powered by external Type C source, still operates on a 5V USB power rail. Generally the quickest way is to flip the USB power rail into +5V / -5V rail which that amp section can work to generate a...

I'll see what I can do.

...that chip on the USB audio device will tell the source device what is the preferred method the USB audio device wants the source to control volume (*whether to let the USB audio device handles the volume control or not). In the case of RU7, Windows will be smart enough to listen to the USB...

BTE-8 is here. Really a no-brainer consider the cost.