Yeah~~ so the existing config of PSU is good and well thought. One can bring the DAC to elsewhere to run with different computers without digging into the specification of it.

Plug and play with the external PSU at the mains.

So the conclusion is, External PSU with clean and stable power.

So let's get some facts from some random reddit'er on the table and leave the past behind:

USB-C, and the various protocols that can be supported within it, including but not limited to USB 3.2 and Thunderbolt 3, are the first time that “Universal Serial Bus” has finally broken through the promise of its name, launched more than 20 years ago, and now truly delivering on that promise:

    it’s the same connector on both ends, minimises frustration.
    the connector can be plugged in either way around, minimises frustration.
    it’s high-speed, starting at 5 Gbps for USB 3.1 Gen1, 10Gbps for USB 3.1 Gen2, 20Gbps and up to 40Gbps with Thunderbolt3 on USB-C cables (depends on length & whether the cable is passive or active). This is a major breakthrough - throughout USB 2.0’s history, 480Mbps was quite often the speed/performance bottleneck between a computer and whatever was on the other end, particularly for storage and graphics/camera devices. This is no longer the case for most applications. Even low-end discrete 3D GPU chips that would normally demand the highest bandwidth PCI-Express connections within a PC can now be at the far end of a USB-C Thunderbolt 3 cable in an external box.
    USB-C device with USB Power Delivery is capable of delivering up to 100 Watts of power. The recipient of that 100 Watts can be almost anything. Because of USB-C’s bi-directionality, that flow of power can be in previously impossible orientations, for example a computer monitor could conceivably be both powered by, and driven with video and audio data from, a computer or laptop, OR the monitor/TV could conceivably be powering the laptop while still receiving video/audio data from the laptop. Or, a smartphone/tablet could provide power to a device, while technically being a peripheral to that device. 1 cable to ‘rule them all’.
    USB has become utterly ubiquitous in what kinds of devices can be connected at the OS & software levels, and USB-C broadens that capability even further with the addition of other-than-USB protocols, like Thunderbolt, DisplayPort, HDMI, and MHL, for devices that choose to implement those protocols instead of USB 3.2.

Expect Apple to ditch Lightning on iThings and move to USB-C in a year or three. They chose Lightning (first released in product in 2012’s iPhone 5) because USB-C was taking too long to be cooked, but USB-C is superior in most ways.

Heck, even Linus fanboys over this plug: https://www.youtube.com/watch?v=OqtNleXhTRE

PS: I get all the love for USB2, don't get me wrong - I understand. I love pure power too. I'm using a Corsair SF750 on my desktop for instance, great little PSU that doesn't activate it's fan unnecessarily. I'd say the only reason apart from less failure from a reversible plug, is it's power handling is so great it'd not make sense to not consider it very very carefully, despite the long run USB2 has had.

Absolutely, +1 for exchange of arguments :-)

What I personally do not like with USB-C is
- it's never 100% clear what is behind it, whether only USB or also thunderbolt
- the plug is so tiny, it doesn't appear robust enough for my personal taste, I really do not like it alone for this reason
- same thing with thunderbolt pls remember all those reports, only the expensive apple TB cable $$$ works
  In contrast to that a normal USB2 cable simply works and is less expensive
- USB2 cables allow 5m cables USB-C with USB2 transfer speed only 4m, huh, where got 1m lost
  On high speed the cable lengths are even limited to 1m. We will need more compact desks in the future.
  Lets see it positives, we only need shorter arms then ..

Just as with A, with C: In theory, there’s no actual “maximum.” However, if you go beyond 3 meters (about 10 feet), your signal will start to degrade. The longer you extend the cable, the lower the speed and the less power it will provide. This gives you a little bit of wiggle room if all you’re doing is sending a signal. For example, if you need to send a security camera feed, a 20-foot run is probably doable, assuming minimal interference. On the other hand, if that feed is a 4K camera with two-way audio, you might have an issue. And if that camera requires the USB cable for power, you’re definitely going to have trouble

So ya I guess if 1 meter more is important, USB2 wins in the long run……

100% agree.

Apart from the speed/bandwidth thing, type C plugs claims can deliver more power, but the pins inside are so small and thin, it against the physics, and when I charge some new device with type C, the connector warms up ... warming up means what? to make it softer? what is the cross sectional area of that pin and wire within the cable?

When micro USB is launched with a latch, people say the former version is sh_t, then USB3 ..... and USB4 ....