Fangrui Product Details [designed For Bassists]: This Mini Amp Is A Silent Amplifier Specifically Designed For Bassists. It Allows You To Adjust The Mix Ratio Of Direct Signal And Speaker Simulation Signal, Catering To Your Preference Whether You Like More Of One Signal Or A Balance Of Both. [main Features]: The Bass Amp Offers Bass Signal Amplification And Cabinet Simulation. It Comes With Three Potentiometers For Controlling Volume, Tone, And Mix, Providing You With A Customizable Sound Experience. [headphone Output]: Mini Amp With A Headphone Output Interface, You Can Experience The Powerful And Stunning Sound Of A Large Bass Speaker Through Your Headphones. This Allows You To Practice Privately Without Disturbing Others. [convenient And Versatile]: Headphone Amplifier Is Easy To Use And Portable, Allowing You To Capture Inspiration Anytime, Anywhere. When Connected To A Cd Player Or Mp3, It Can Play Accompaniment And Your Playing Simultaneously, Making Your Practice Sessions More Effective And Enjoyable. [quality Ma