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.