I would argue both points.

First, most phones have at least 20GB, which is a LOT of music storage if you’re using 320vbr compression, and if you’re an audiophile who absolutely positively must have flac for everything, you’re already going to be familiar enough with storage to know what size microSD card to get. Add in a synced dropbox/gdrive/nextcloud/whatever folder, and you don’t even have to manually plug it in to transfer files anymore, so space is kind if irrelevant.

Second, most people who are mobile are going to be listening with bluetooth headphones, and those who aren’t can still use a USB-C to jack adapter, which are pretty inexpensive and ubiquitous now, have passthrough charging solved, etc. For the audiophiles, there are very good USB-C DACs out now.

I guess I’m just confused about where this device fits into my life. If I’m mobile, it’s extra stuff to carry that duplicates functions I already have on me. If I’m home, I have fixed audio equipment that is way more versatile.

What’s the benefit of this device when you can just put your audio files directly on your phone or laptop already?

What qualifies as “damaging noise”? Asking because I have a neighbor who has the loudest damn leaf blower of all time.

What is the last KDE you tried? Plasma is SO good, right out of the box.