Ampero One represents the uncompromised, widely praised Ampero sound in a smaller case. Powered by the new-gen CDCM HD (Comprehensive Dynamic Circuit Modeling High Definition) and F.I.R.E. (Field Impulse Response Enhancement) system, Ampero One offers you all the real sounds of rock past and present. The 4-inch hi-def color touch screen and optimized UI provide you smoother, smarter experience. Features: The popular amp modeler & effects processor in a smaller case New-gen CDCM & F.I.R.E. modeling system ensures high end tonal expressiveness and realistic playing experience Powerful dual DSP-powered platform ensures excellent sound quality 24-bit signal processing, up to 120dB S/N ratio 4-inch 800 x 480 sharp color touch screen with instant control Internal voltage boost circuitry for great dynamic range USB port for firmware upgrading, loading/editing/managing effects/IRs via free Mac/PC software or for use as an USB audio interface Advanced acoustic simulation effects Dedicated acoustic effects and presets - a one-stop solution for acoustic players 242 effects based on stunning XTOMP effects library CDCM HD & F.I.R.E. modeling effects including: 64 amp models 60 cab models 100+ legendary pedal models Next-gen mic position and microphone type simulations 50+ Hotone original effects (incl. high quality drive/dynamic/filter/mod/delay/reverb models and more) User custom IR loader with 3rd party IR support 198 presets Built-in drum machine with 100 patterns Built-in looper with max. 100 seconds recording time 3 assignable footswitches with halo LEDs Built-in expression pedal Authentic stereo output processing Essential I/O for most connection needs External controller jack for connecting external footswitches/pedals Customizable main display modes, theme colors and UI language (English/Simplified Chinese) Road-ready, light-weight aluminum casing 9V DC power supply