COOIDEA 3.5mm Stereo Audio Switcher Support 1 in 3 Out or 3 in 1 Out with 3.5mm Audio Cable, 3 Ports AUX Audio Speaker Selector for PC Phone Laptop Headphone music_UK_update_2021 55mm ND4: Neutral density Filters-

55mm ND4: Neutral density Filters- Neutral density filters are neutrally gray-toned

Easy to be fixed on the footswitch for more comfortable step

Anti-Glare Technology: Experience superior visibility with our cutting-edge anti-glare technology

and the automatic temperature compensation (ATC) is between 10C~30C (50F~86F)

Two knobs control its direction separately

COOIDEA 3.5mm Stereo Audio Switcher Support 1 in 3 Out or 3 in 1 Out with 3.5mm Audio Cable, 3 Ports AUX Audio Speaker Selector for PC Phone Laptop Headphone music_UK_update_2021 55mm ND4: Neutral density Filters-COOIDEA 3. 5mm Stereo Audio Switcher Support 1 in 3 Out or 3 in 1 Out with 3. 5mm Audio Cable, 3 Ports AUX Audio Speaker Selector for PC Phone Laptop Headphone Product Features Bidirectional 3. 5mm Audio SwitchPlug and play, no power supply required. 1X3 (one input to three outputs) or 3X1 (three inputs to one output) 3. 5mm interface audio selector designed for easy switching between multiple audio receiving devices (speakers, headphones, etc.) or