This is the Hotone XTOMP. Operation has been confirmed, and there are no issues. Ultra-thin design for a compact footprint that fits easily on a pedalboard. Realistic sound reproduction thanks to "CDCM (Comprehensive Dynamic Circuit Modeling)" technology. Over 100 effect models selectable via app. Data transfer and settings can be changed via Bluetooth (iOS/Android) or USB. Input/Output Terminals: Left In/Out, Right In/Out (stereo compatible). Bypass Mode: Relay True Bypass / Analog Buffered selectable. Power: 9V DC center negative (adapter sold separately). This single unit can reproduce the sounds of multiple pedals, simplifying your board. Easy effect switching and management with the smartphone app. Metal enclosure for high durability, reliable for live use. Intuitive and easy-to-operate design with an LED ring. Unit only (power adapter and box not included). There are minor scuffs from use, but it is generally in clean condition. Operation has been confirmed, and there are no issues. Please prepare a power adapter (9V DC center negative) separately. A compatible smartphone is required for Bluetooth connection. Please refrain from purchasing if you are sensitive to used items. Personally, I liked using it for cabinet/amp simulation and the looper function. Tap tempo operation is also possible with the built-in footswitch on many models. Thank you for viewing.