Mistral Large 4 vs GPT-6 Luna

Patchbay sits in a former warehouse on Rotterdam's northern edge, where the Maas meets the industrial harbour. Three of us work here—no more, no less—surrounded by oscilloscopes, desoldering stations, and the persistent hum of transformers. We repair vintage synthesizers. That is the whole business.

We are not a museum, and we are not a factory. Every Minimoog, ARP 2600, or Juno that crosses our bench receives the same stubborn attention: traced schematics, replaced capacitors, calibrated voltages, hours spent listening for the note that was never quite right. The machines arrive broken, silent, forgotten. They leave singing.

Rotterdam built its reputation on moving heavy things and keeping them moving. We apply the same pragmatism to circuits that predate us by forty years. If it made sound once, it can make sound again. That is the promise we keep, solder joint by solder joint.

Patchbay is a three-person studio in Rotterdam devoted to repairing vintage synthesizers. We work with instruments that have been played, carried, opened up, and passed from one owner to the next. Each arrives with its own history and its own set of quirks, so we begin by listening carefully and tracing the problem before reaching for a fix.

Our work ranges from straightforward maintenance to deeper electronic repairs. We clean, test, diagnose, and restore with the aim of making a synthesizer reliable again while respecting the design that gives it its voice. When a repair calls for a replacement part, we look for a solution that fits the instrument rather than treating it as disposable.

Patchbay is run by three people who share a curiosity about how these machines work and a respect for the sounds they make. We believe a well-cared-for synthesizer has plenty more music in it, and we’re here to help it find its way back into someone’s hands.