Patchbay is a small repair studio in Rotterdam, built around three hands, one bench, and a shared patience for machines that should have been forgotten. We work on vintage synthesizers — the hissing, glowing, drifting instruments that shaped records decades ago and still find their way to us in boxes, corners, and half-finished projects. Some arrive dead silent. Others howl through cracked pots, sticky keys, and memories of bad rooms. We like that. Our approach is careful: diagnose, restore, and explain what we found. We replace what must be replaced, but we preserve what gives an instrument its character, including its quirks when they are honest ones. Each repair is handled directly by the three of us, from first inspection to final listening. We are not a factory and we do not rush. We are three people in Rotterdam who believe old synthesizers deserve attention, patience, and a little stubborn love.