I've never heard it. I may work well but I won't recommend stuff I haven't heard.
Headroom Total Airhead/Bithead (DAC/amp). Nice warm sound goes well with Grados.
Or you can check out of the iBasso stuff. Not sure about the cost, but you can roll opamps on some of their units to tailor the sound to your needs.
If you need just an amp, a CMOY (check ebay) would do. Just replace the socketed op-amp chip with an NJM4556 from Digikey.






















