Korpa 
Rushead Max Bass is a straight-forward, easy to use headphone amplifier for bass guitars. Inside you'll find the heat of the world's most famous amplifiers, each with a full range of timbre adjustment. From sheer cleannatural sound, to toasty heavy overdrive tone, we bring them all together just for you. Amps love effects. Rushead Max Bass also hooks you up with multi-mode, switchable modulation, accompanied with echo and reverb effect module to give your performance that A-list tone.
A special designed lithium battery is for powering the amp and bringing you over five hours of continuous use charged by USB. An AUX IN jack bestows upon you the right to jam on your favorite tracks.
● 5-knob hi-def tone shaping control
● AMP module containing clean, overdrive and distortion amp models, based on world-class bass amplifiers
● Switchable MOD module with chorus, tremolo and flanger effects
● Switchable AMBIENT module with reverb and echo effects
● Aux input for jamming along with any audio player
● Playing anytime, anywhere for up to 5 hours
● Onboard USB charger
