The TranZformer CMP incorporates api VCA compressor circuits that are often used in recording, into a versatile compact effector. Designed to fit in the pedal board and operate with standard 9V power supply, it delivers studio quality compression sound on the foot. This product is a long-awaited product that realizes api custom transformer output and 2510 opp amplifier "api sound" in a compact size. You can get good "api sound" sound with electric guitar, electric bass, and other line instruments. Api2510 Optic amp; 2-stage switch adjustment; 2-stage switch adjustment; WET/DRY BLEND control; Feedback (OLD) / Feed forward (NEW) selectable compressor style buffered bypass