This is the ALBIT A2BP pro MARK II. The mute function is now a footswitch, significantly improving convenience on stage. Although it's a pedal type, it's a preamp that can drive a power amp. It was useful not only for normal input use, but also for inserting into the return of a stage amp to easily get my sound. I found it very useful on stage, allowing for various uses such as switching between A/B settings with one bass guitar, setting up a parallel sound emphasizing the natural sound and effects like distortion for the final setting, and setting up different instruments with two bass guitars. The ability to add the thickness and warmth of a vacuum tube just by running the signal through it is also appealing. Due to a major system overhaul, I would be happy to pass it on to someone who can make good use of it. It was kept on a board, so it's in excellent condition with no major damage. Operation has been confirmed. I've attached glow-in-the-dark stickers to the footswitch for stage blackout対策, and will ship it as is. The original box, dedicated power adapter, and all original accessories are included.