Features:Classic compress pedal with smooth and tight attack and decay, preserves the original signal transients perfectly.3 knobs control: LEVEL/SUSTAIN/ATTACK, suitable to play in high gain and distortion or tight clean sound.True bypass footswitch for switching between compress and bypass status.With LED light for indicating effects or bypass status.Zinc Alloy shell and compact size, durable and portable.Specifications:Input: 1/4 inch monaural Jack(impedance:2.2M ohm)Output: 1/4 inch monaural Jack (impedance:10K ohm)Power Supply: DC 9V AC adapter (center minus plug)(not included)Item Size: 9 * 4 * 3.5cm / 3.5 * 1.6 * 1.4inItem Weight: 220g / 7.8ozPackage Size: 11 * 6.5 * 6.3cm / 4.3 * 2.6 * 2.5inPackage Weight: 300g / 10.6ozNote:Power adapter is not included.Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.Package List:1 * Effect Pedal