Boss SY-1000 X-High Gain Amp

G - Gain B - Bass M - Middle T - Treble SPKSIM - Speaker Sim DYN - Microphone The Technology: Multi-Dimensional Processing (MDP) Traditional high-gain tube amplifiers face a physics problem: when you crank the gain to extreme saturation, the low-end frequencies can get "flubby" and muddy, while the high-end strings can turn harsh or "fizzy." The X-Hi Gain completely side-steps this issue using MDP (Multi-Dimensional Processing). How it works: The SY-1000 dynamically analyzes your guitar input signal in real-time across multiple frequencies, overtone levels, and dynamics. It applies independent distortion and compression to different frequency bands simultaneously.