The Realist RLSTSC Sound Clip Clamp-on Transducer Acoustic Bass Pickup The SoundClip clamps on to the bridge of the acoustic bass easily, without marking or damaging. Clamping allows it to be added to or removed from any bass, at any time, without hassle. Easy installation makes The SoundClip great for traveling bassists or for those who want a pickup only when they are using an amp. The on-board volume knob gives the player full control to adjust output on the spot The innovative variable weight system helps to contour tone, and it's fully adaptable to all playing situations