I currently own the Little Dot MKIII, which I have done some tube rolling with, and although it was a great buy for the money, I've gotten to the point where I am a bit bored and am looking for better sound. I'm wondering what kind of increase in performance I could get by upgrading to a better amp, and what price point I would need to jump to in order to achieve this audio quality? As far as my budget goes, I'd like to keep it in the 500-800 range, but flexible. I looked at some Schiit amps, and the prices seemed pretty good, but I'm not sure how much of an upgrade any of them would be because I have no means to compare. So, any recommendations/comparisons to what I have now would be greatly appreciated.
My current go-to headphones are the Shure SRH940, but I am also in the process of auditioning others that I may use, so I'd ideally like something that is versatile and can pair well with a variety of headphones.