Nanoloop has been providing ways for music and gaming enthusiasts to create tunes with a Game Boy for years now. The company is back with a new card for the original Game Boy handheld: the Nanoloop Mono. With the €69 (around $76) accessory, you can transform that classic gaming device into an analog mono synth. Thanks to one pin of Game Boy's cartridge connector working as an audio input and a built-in amplifier, the Nanoloop Mono can generate sound and output it through the headphone jack in a completely analog fashion.
The Nanoloop Mono packs in three analog filters and a noise generator on its hybrid sound chip. There's also a step sequencer with per step control of the parameters and eight memory banks than can each hold 15 patterns per channel. While the card works best with the OG Game Boy, it will also provide some noise when used with the Game Boy Pocket and Game Boy Color. However, Nanoloop says sound quality suffers with those gadgets. It doesn't work at all with the Game Boy Advance, but the company makes another card for that handheld: the Nanoloop 2.0. While you decide whether or not to turn your collector's item into a music making machine, the video below shows the Mono in action.