Yeah that’s one thing I missed about my note was the external storage , I bought the highest storage for my IPhone X 256gb and have not even thought about running low however it would be much better if I was able to swap out micro sd cards as I wish . The Dacs in the galaxy phones are pretty darn good so I’m not surprised your getting good sound out of it with hi Rez files . I had a note ever since the first one up to the 7 and I always used the note feature because when I had meetings when I was in the Army it was extremely convenient to not scribble on paper and possibly loose it . I just took my notes and emailed them to my self later , came in very handy .My Note 8 has been going reliably for about 9 months now with regular updates. One of the things I like about it is the added storage I have for it. 200GB microSD card + 60 GB internal and a FiiO Q1 DAC and I can bypass the internal DAC and listen to loads of CD quality Flac and hi rez files on my headphones when traveling. The sound of that Q1 and the Sennheiser 579HD, and I can actually enjoy music with cans. The note function is nice, but I don't use it like I thought I would. Unless this phone takes a dump I don;t see changing i anytime soont, especially for lack of storage.
Audiofreak71