Sounds better then the other with a fairly neutral headphone.

I'm looking at similar USB-C DAC cables to use with my iPhone 15 Pro Max. The simple cables. SO the DAC will make a difference as the cables are similar.

Which DAC chip is better the CS43131 or the ES9281?

In no order as I've not compared them yet. Both do sound good. Fiio BTR3 (BT and USB DAC) KEYSION Type-C ES9281 DAC/Dongle

Buy how does the Keysion compare to other of the similar DACs being talked about?

What does anyone think of this. It's a "KEYSION Type-C to 3.5mm DSD256 Hi-Res Audio MQA Headphone Amplifier ES9281 32bit 384kHz HiFi USB DAC Adapter for Android Mac PC" USB-C DAC/dongle. https://www.aliexpress.com/item/1005005515686352.html

The Andy Site is broken due to an invalid SSL certificate because it's too long.

It's the Porta Pro from Drop. https://drop.com/buy/massdrop-x-koss-porta-pro-x-headphones?searchId=606ec00661f61a9ee7aa1ebaa525eac3

I can't say about Van Halen and The Who, but I can say that Green Day, Jethro Tull and Paul Mccartney are very good. Well worth getting. Forget AAC. You'll never get even close to how good they are with AAC. Another good set or recordings is from Tom Petty & the Heartbreakers. Just so good. Tom...

Why would FIIO put in a USB-C port? That would make it incompatible with the K5.

Here is the Google Translate link. http://translate.google.com/translate?hl=en&sl=auto&tl=en&u=http%3A%2F%2Ffiio.cn%2Fproducts%2F115%2Fparameters

Happy to help. It's really really good. The CD version is good, but the SACD version just has something that makes it pop.

Here is another article on the M7. https://www.sammobile.com/news/samsungs-exynos-7270-processor-now-powers-a-hifi-music-player/

The specs are pretty much listed in the graphic shown.

https://www.gizmochina.com/2018/02/05/meet-fiio-m7-exynos-7270-powered-hifi-music-player/ FiiO is a Chinese company established in 2007 that manufactures audio equipment. It is best known for its portable HiFi music players but also makes amplifiers, earphones, and DACs. Its latest Hi-Fi audio...