The Hosa GMP-386 is a compact adaptor that converts a 1/4-inch TS (Tip-Sleeve, mono/unbalanced) plug into a 3.5 mm TRS (Tip-Ring-Sleeve, stereo/balanced) jack. It’s commonly used to connect mono/unbalanced sources such as instruments or line-level gear to devices that accept 3.5 mm stereo inputs, including recorders, computers, and portable audio devices.
Key Features:
- Converts 1/4 in TS plug to 3.5 mm TRS jack
- Allows interfacing between pro audio gear and consumer devices
- Rugged, all-metal construction for durability
- Compact design – fits easily in utility kits and gig bags
- Suitable for studio, stage, broadcast, and home use
Typical Uses:
- Connect instrument/line outputs with 1/4” TS to stereo 3.5 mm inputs
- Adapt pro audio equipment for recording into consumer devices
- Quick solution for musicians, DJs, and AV technicians


















