MH400 Ultra Low Noise 4 Channel Line Mixer Mini Audio Mixer & 1/4 inch TS Inputs Output Volume Control for Guitars Bass Keyboard|Electric Instrument Parts & Accessories| - AliExpress
MATRIXSYNTH: BOSS KM-600 vintage keyboard mixer
Amazon.com: Radial Key Largo Keyboard Mixer with Balanced DI Outs : Musical Instruments
Radial Engineering Ltd. - Key-Largo Keyboard Mixer, USB Interface and Performance Pedal The Key-Largo is a unique and powerful device that combines a multi-channel keyboard mixer with a USB audio interface, while