Feature:1. Various Types: This bass guitar pedal delivers various types of compression via ATTACK, COMP, SENSE, VOL, GAIN knobs, which ensures clarity and makes sound stand out during live performance.2. ATTACK and SENSE: The ATTACK and SENSE functions of this bass compression give it a strong compression, transparent tonality and a clear articulate sound production.3. Extra Volume: This compression guitar pedal can also be used to give extra volume and penetration when required.4. 1/4in Single Track: This compression effect pedal adopts 1/4in monophonic track jack for signal input and output.5. Aluminium Alloy: This bass compression pedal is made of premium aluminium alloy in high strength, which is sturdy and durable, not easy to break.Specification:Item Type: Bass Guitar PedalMaterial: Aluminium AlloyPower Requirements: 9V DC Current Centering NegativeSignal Input: 1/4in Mono Jack SocketSignal Output: 1/4in Mono Jack SocketCurrent Consumption: 50mAProduct Size: Approx. 12.1 x 9.5 x 3.9cm / 4.8 x 3.7 x 1.5in ( Manual Measurement, Slight Error May Exist ).Package List:1 xBass Guitar Pedal1 x Foot Pad