The JHS Pedals 3 Series Compressor is a simple yet powerful compressor that can be set to anything from a smooth, lightly compressed tone to a very compressed sound. The Attack and Sustain knobs adjust the overall feel of the compression and its response to your playing, while the Volume knob sets the overall volume to unity or boosts it. The Bright toggle switch engages the high frequency EQ to prevent your tone from being compromised in certain situations. The power supply is DC9V, center negative, and consumes 8mA. [JHS Pedals 3 Series] This collection is designed to provide pedals that are cost-effective and simple to operate without compromising on quality. These pedals are manufactured at the JHS Pedals factory in Kansas City, Missouri using high-quality parts and meticulous attention to detail, including quality control. Each pedal features three simple controls and one toggle switch, offering a wide range of sounds suitable for beginners and professional players alike. Its affordable price will inspire your performance and lead you to new sounds.