Studio-grade compressor pedal for bass Demonfx Call76 A clone of the Origin Effects Cali76-CB. Modified with cool stickers and switch nuts. Furthermore, there is a compression LED on the internal board, which glows faintly blue through a transparent lens on the center right, making it visible. I haven't been able to compare it with the original, but it's very clear and effective, and it's really good! Operation confirmed. This unit is for adapter use only. 9V/006P batteries are not supported. Instant purchase OK. (Ships on weekdays. Cannot ship on weekends and holidays)