The ZOOM B1X FOUR, equipped with an expression pedal, is a multi-effects processor for bass guitars featuring a wide range of effects and a looper function. - Model Name: B1X FOUR - Brand: ZOOM - Function: Multi-effects processor - Included Accessories: AC adapter, USB cable, original box - Features: Expression pedal included Thank you for viewing. I used this a few times live, but I'm selling it because I no longer play bass. Operation has been confirmed, and I will include the USB cable and adapter.