I've got a lot of different gear, but the stuff in question was the HiBy R3, which has a new ESS DAC/AMP combo (an SoC which eliminates a lot of variability in quality due to implementation problems) and a very healthy 200mW/16R (or somewhere around there) output power in balanced mode. Small, the software is great by DAP standards and it's inexpensive.

The IEMs I struggle to recommend: Fiio FH1, which is a dynamic driver / BA 'hybrid'. They are enjoyable to listen to but definitely not reference -- bass heavy. They're leagues beyond a typical earbud, however, and for $75 it's hard to complain.

I mainly don't recommend them because they're the first IEMs I've tried anywhere near that price range, apart from freebies included with smartphones, etc. They might be easily bettered by something else in the same price range, especially since there's a lot of competition there now.