Little Dot MK VI + or VIII SE
The VI+ is for low Impedance Headphones
VIII SE for High Impedance Headphones
Chances the the MK VIII SE will work nicely for the new Audeze Proto Type, the MK VIII SE pushes 2,000 mW PC at 600 ohms, so it should hopefully run at least 500 mW into 1200 Ohms maybe more, maybe less... either way those are my options to you for an amp
For a Dac the Schiit Gungir is at $749, which should save you about $300 for some...