All of the amps I own including Questyle CMA Twelve, Ray Samuels Emmeline II The Raptor, Ray Samuels Emmeline HR-2, Ray Samuels Emmeline XP-7, DarkVoice 336SE, Singxer SA-1, RebelAudio Rebel Amp, JVC SU-DH1, Little Dot I+ (LT1364), Little Dot MK III, Monolith Liquid Spark, Beyerdynamic A20, HeadAmp Gilmore Lite, HeadAmp Gilmore Lite Mk2, Marantz 2245, JDS Labs Atom, Schiit Lyr 3, Schiit Jotunheim, Schiit Jotunheim 2, Schiit Magni 3+, Schiit Asgard 3, Schiit Magni 3, S.M.S.L. SP200, Drop AAA 789, DROP Liquid Carbon X + SDAC, Lusya Fever DAC/amp, MH-752, NuForce Icon uDAC/amp, Worst amp in the world is the Topping L30 and a few more.
I know most love this headphone and I am in the minority. However, it sounds awful to me. I do own the HD580 HD650S and even though they don't have great resolution, I enjoy them.