Fine silver power cords and speaker cables from scratch. DIY balanced ICs using Connex/DH Labs BL-Ag bulk cable.
Much of the rest of it is DIY modified.
Modified Atma-Sphere MP-1 preamp with LDR volume control, VSE Superregulators, all-film power supplies & high-gain hybrid phono section.
Modified Pass XP-25 phono with ClarityCap MR coupling caps and TX2575 load resistors.
Modified Merlin VSM with ClarityCap/Duelund crossover, Duelund silver wire, and modified BBAM with ClarityCap MR, teflon bypass caps, TX2575 resistors, and bespoke Hynes power supply.
Modified Velodyne DD-15 with fast recovery rectifiers, silver wire, and cabinet resonance treatments.
DIY AC balanced power using Signal DU-5 transformer.
DIY can lead to satisfaction in surprising ways.