Guitar Amp:
Compatible with Gibson Guitar, Fender Guitar, and others with 6.35 mm jack

Digital Keyboard:
Compatible with Yamaha keyboard, Casio keyboard, Roland keyboard and more

Mixer:
Comaptible with Behringer mixer and more

Other 6.35 mm Devices:
Speaker, bass, amplifier, recorder, guitar, mixing console, home theater devices, or AV receivers etc

Device with 3.5 mm Jack:
Compatible with Sony/Bose headphones, earphones, speakers, headsets, Hi-Fi system, Amplifier, Soundbox, Soundbar

Device with 3.5 mm Jack:
Compatible with iPhone 6/5/4/SE, iPad, iPad Air, iPod, Sony Walkman, Tablets, Smart TV, MP3 MP4 player; MacBook Pro 2021/2022, Galaxy S10 Plus/S10e/S9