This is a BOSS BE-5 multi-effects unit for guitar, manufactured around 1990. It's a primarily analog multi-effects unit. (Delay is digital?) Its simple operation and individual on/off switching allow you to create your own sound. The distortion section is said to be the prototype of the OS-2. There are scratches and dirt, but I believe the unit is in relatively good condition. The protective vinyl is still on the control panel. One control knob is missing. Functionality confirmed. Includes: Main unit, power adapter Also includes the original box, although it is quite dirty. Please understand that this is a used item before purchasing. No returns, no refunds, no exchanges. Please ask if you have any questions. ----------------------- Guitar multi-effects unit with 5 effects. - Model: BE-5 - Type: Multi-effects - Power Adapter: Included - Number of Effects: 5 - Functions: Chorus, Digital Delay, Overdrive/Distortion, Compressor Thank you for viewing.