Purchased new in 2018. Used regularly until now. ● Please understand that this item is being sold as junk since all buttons and various parts have not been fully checked. Please understand that issues other than the unit not powering on are not covered. 〇 I did not subjectively feel any crackling, but please understand this is based on my subjective assessment. (Used in conjunction with other interfaces) ● Original box, instruction manual (Japanese), and accessories included. (One of the two included USB cables has poor contact) ● Control CD unused ● Control VINYL 4 pieces unused ● A dedicated deck saver will be included as a bonus. 〇 The original fader knobs are prone to coming off due to aging, so aftermarket knobs are attached. (Original knobs are included) ● There are scratches and minor imperfections, but there are no critical cosmetic damages. ● All knobs are present. Please feel free to ask any questions in the comments section. 4-channel analog mixer, FLEXFX effects function, USB connection compatible. - Model name: RANE SIXTY-EIGHT - Connection terminals: USB connection - Effect function: FLEXFX (reverb, filter, flanger, etc.) - Number of channels: 4 channels - Crossfader: Adjustable - LED indicator: Multi-color LED indicator - Volume slider: 3 volume sliders Thank you for viewing.