Teenage Engineering M1 Foldable Personal Monitor Headphones for OP-Z Foldable headphones with both detachable and built in microphones. 1200 mm audio cable with 3.5 mm. 4-pole (trrs) male connectors. M-1 is perfect for use with OP-Z in headset mode, for easy and convenient voice sampling. The headphones are compatible with any audio gear with headphone [...]