Heavy machined aluminum enclosure.
Giant toroidal power transformer along with 4700uf of capacitance on a separate regulated power supply board. Boutique Solen brand gold plated binding posts. Gold plated REAN connectors. High purity copper, gold plated IEC input with integrated fuse. Kimber TCSS output wire and Belden Brilliance shielded input wire. Alps blue velvet volume control.