Looking for legendary tone on the go This used Rockman BASS ACE Battery Powered Amp delivers classic analog bass sounds in a compact, lightweight design. In good condition, it runs on a 9V battery and features stereo 1/4" headphone out, auxiliary input for jamming with tracks, and user-selectable Clean, Edge, and Distortion tones. Specifically designed for bass players, it reproduces deep, punchy lows with surprising clarity for its size. Built by Scholz Research & Development, this vintage portable amp offers a nostalgic sound and durable build quality. Ideal for silent practice, travel, or warming up backstage, the BASS ACE gives you the freedom to play anywhere without sacrificing tone.