Amp jack

Class A 16-300 Ohm HiFi Headphone Amplifier 3.5mm Jack Aux Portable Adjustable Audio Amp Music Player for Speaker MP3 Computer Mobile Phone

40W Acoustic Guitar Speaker Rechargeable Portable Electric Guitar Amp OTG/Type-C Jack Reverb Chorus

MOSKYAUDIO Dual Footswitch Amp Channel Footswitch Aluminum 6.35mm Input Output Thru Jack for

Donner Mini Guitar 7 Types of Amp Modeling 40 Types of Drum Machine Reverb Wireless Battery Headphone and AUX IN Jacks Home Practice Amplifier, 5W,