This is a BOSS CE-1 Chorus Ensemble, equipped with chorus and vibrato functions. 【Product Details】 ・Model Name: BOSS Chorus Ensemble CE-1 ・Functions: Chorus / Vibrato ・Power: AC100V 50/60Hz (power cord attached) ・Country of Manufacture: Made in Japan ・Connectors: Input jack, Output jack ・Controls: Level, Chorus, Vibrato adjustment knobs ・Switches: Effect / Vibrato footswitch Operation has been confirmed, and both chorus and vibrato function without issue. The main unit has scratches, stains, and signs of use due to aging, so please check the photos. Please purchase only if you understand that this is a vintage and used item. Operation has been confirmed. ※The red indicator lamp on the left side does not light up. ※There are small chips on some knobs (see photos). There are no issues with sound output or chorus/vibrato operation. Due to its vintage nature, there are scratches and signs of use. Please check the photos for the condition. Thank you for viewing.