Clear at one glance 3.5-inch TFT color screen. 278 Effect Types to Choose From 100 classic effect simulations, 80 amp simulations, and 50 cabinet simulations. One Knob to Rule All Pressable knob for navigating the menu and adjusting the parameters. One Foot Switch Switch your pre-set tone combinations with just one foot. Easy to use Arena2000's touch mode complements its small function panel design, and the navigation is simple and clear. Both amateur and professional musicians can easily get started. It can be the finest accessory to have with you at all times, whether you're in the studio, on stage, or in your bedroom. Full function transformed from bedroom to stage Arena2000 has Guitar In, Aux In, MIDI In, XLR L/R, and Unbalanced 1/4. A Cab Sim output option allows users to switch between the 1/4 output port and the XLR output port, which makes it handy for artists to perform live. Features: FVACM(Forward Analog Virtual Circuit Modeling)Technology 150 Presets (50 Banks x 3 Presets) 80 Hi-res Amp Models 50 Built-in Cab IR Models + 50 Slots for Loading 3rd Part IRs IR Length: 23.2ms A Total of 278 Effects Moveable Effects Blocks for Flexible Signal Routing Multi-function Ctrl and Expression Pedals ensure unlimited control possibilities Built-in Drum Machine with 40 Patterns, and 60s Looper with Reversed/Double Speed/Half Speed USB Audio/Recording supports recording dry and effect signals simultaneously MIDI IN for External Switching Devices Computer Software for Tone Editing, Backup, and Firmware Update Mobile App for Bluetooth wireless Tone Editing This product has a headphone output impedance of 10 ohms. Please select headphones with an appropriate impedance for use. Impedance that is too high may result in low headphone volume. Please be aware. Product Manual: Donner Arena 2000.pdf Arena 2000 Donner Control Download : Arena 2000 Donner Control Download