Disclaimer: Burson sent me Play, Fun, and Bang to review at Headfonia.com as well as document as well as I can hear. Fun is a powerful headphone amp. It starts at 299$ USD. You can find out all about it here: Fun - 2W PC Class A Headphone Amp / Pre Amp.

Relevant links

RMAA: NEXTDRIVE SPECTRA X 24-BIT
RMAA: IMAC PRO 2017 24-BIT
RMAA: SONY ZX300 24-BIT
RMAA: AUDIRECT WHISTLE 24-BIT
RMAA: SONY NW-WM1Z 24-BIT

With a single proviso, Burson’s Play is awesome. With none, Fun is god-like. So god-like is it that it’s got nowhere to go but the top of my 2018 best-of list. Wow. RMAA suggests that its best op-amp set is Vivid, but I most like Classic. I reckon we’ll all have a different take.