I guess, optional. Some PSU's come with two-prong mains plug, phone chargers by example.

Soldering fuse solves poor quality contact problem. It won't get any better without fuse.

I assume you have already cycled power of DI-24HE. If not, do it now. 1. Unplug DI-24HE USB cable. 2. On Windows go to the Control Panel (not a Device Manager) and uninstall the existing Amanero driver. 3. Run setupuac2.exe file and follow prompts. There are two parts: for a Windows interface...

You are always naynay. :) A product is selling for one month or two and has no negative feedback.

This is a lowest price I saw! There is a new isolator in a smaller package, but PCB seems to built on the same concept. It has USB type C input, it is not what I do prefer, but convenient for Macbooks and ultra slim notebooks users. Only $27 which is surprising given what is inside. Posted...

Seen a photo of a fragment of PCB. It looks transparent - two sides only without a solid ground plane between. It is acceptable for $50 product. Even the model you found for $80 had four layers board.

Problem is, we have been using driver 1067 for years with a standard firmware CPLD_for_1080. See a yellow marks on a screenshot. There is a note on the bottom that links to the same 1067 driver which hasn't been updated. This driver do not enable DSD512 on Windows! If Audio GD started to supply...

Something has changed. Did you buy DI-24HE before 25th April? EDIT: I keep a link to the old page, that provide links to the two different drivers for Windows, but can't advise any further, just for a reference: http://audio-gd.com/Firmware/AmaneroforLinuxEN.html

:) Not. Use it with Windows or Linux as you like. Just with Windows load a different driver than you use now.

This is common mode filter. The best use is at the receiving side. This is equivalent of Ifi Defender. The best use as per Ifi instruction. None of them are isolators. For the latest high-speed isolators look at Douk Audio U2Pro poorman DDC thread.

You can boot Windows from a separate partition. Or just keep a hard drive and install Linux on the new hard drive. Then swapping hard drives is a safe method. Other than that: - You don't use Blaster for flashing Amanero firmware. Only for flashing motherboard firmware. Follow a flashing...

You are absolutely right, a balance is in between. Higher sampling rate increases jitter proportionally. However I need to give credit to @naynay. There is a special case with Delta-Sigma DAC's, where only a specific sample rate allows bypassing internal DAC oversampling engine. HQPlayers fans...

A final result is important. Sound quality, not numbers. I know, you need PCM 768kHz which is optimal for your Delta-Sigma DAC. But do PCM 768kHz sounds better than DSD512 in your DAC? That is a big question and seriously... doubtful. But a DSD512 is available with DI-24HE.

It blocks noise on the isolator and regenerate signal. Audio jitter or USB timing jitter? If the later, yes. Isolator chip recreate timing and it seems there is also on-board USB 2.0 hub chip that fully regenerate complete USB frames. We can talk about audio jitter once synchronous datastream...

That is perhaps in our brain, but I didn't experience such long term degradation. What I do experience in most of DACs is a fatigue which comes between half an hour to few hours of a session. Initial details, separation and harmonic coherency are gone, it is a time to stop listening...