Which dac/amp for IE 800 s?

[greyscale]

Using Sennheiser ie 800 s . Have been listening from a Samsung S7 or a Apple Ipad Pro. How to upgrade the source? amp/dac or dac only? Am looking at the Sony TA-ZH1ES (has a remote!!) or the Sennheise HDV820. OR?????. listen to classical and 70s through 80s rock, and have a Qobuz acct. Any suggestions?

PS: pls no Schiidt. thx

[pippenainteasy]

These are pretty easy to drive and don't require an external power source. If you want something better than your phone, just get a quality DAP. Full size headphone amplifiers aren't really appropriate for IEMs and generally will have audible hiss and actually will likely sound worse than driving them with your phone.