Favorites are the Atticus, 6XX, and Elex.

Amps: Feliks Audio Echo, Schiit Lyr 3, Asgard 3, and CTH

DACs: Schiit Bifrost 2, Modius, Modi Multibit, Chord Mojo, AudioQuest Dragonfly Cobalt

Headphones: ZMF Atticus, Aeolus (soon!), Focal Elex, 6XX, TR-X00 Mahogany & Purple Hearts, FiiO FH5/FA7/FH7, and Dekoni Blue modded to Argon MK3.