diagnostics, refurbishment, and calibration for devices such as amplifiers, tape machines, cassette decks, mixers, powered speakers, and musical instruments. It focuses particularly on equipment manufactured between 1970 and 2000, where designs support extensive repair and restoration work. When original parts are obsolete or unavailable, the company designs and implements custom hardware solutions to keep legacy systems operational. Halium Solutions also undertakes embedded systems design and industrial electronics work, including control and integration for mono‑printing inkjet systems.