Gustard H20 and Schitt Mjolnir v1 headphone pre-amp combos, these drive about 15ft of balanced cables.
Schitt is stock, H20 is modified for high current, check out its thread for details.
I have the HD800, HD600, LCD3F, Stax SR009 and Koss ESP90
DAC is custom rebuild/reimplementation of LKS MH-DA004 capable of the 9038Pro's top sampling rate of 768kHz
Speakers are Martin Logan Summit Electrostatics driven by Aragon Palladium 1K monoblocks.
Amps are balanced, necessary to handle the current demand of the electrostats.