Here be dragons

Headphones: Focal Clear, Klipsch HP-3, Quad ERA-1, Sennheiser HD6XX, beyerdynamic DT880 600 ohm

Amps: LTA MZ3, Rupert Neve Headphone Amp, Bottlehead Crack + Speedball

DACs: Lampizator Amber 3, Schiit Bifrost 2