Similar in concept to bi-amp. Tri-amping refers to breaking an audio signal into three discrete frequency ranges prior to being amplified and delivered to speakers. The idea is to deliver audio frequencies to at least three different drivers or speakers that are optimized to reproduce the frequency ranges they get. An electronic crossover is used to break the signal into three ranges. Then each is sent to its own amplifier and speaker(s). Another benefit of tri-amping or bi-amping is that even when one frequency range overloads and distorts the other(s) remain clean, which can greatly improve overall clarity under high power/volume situations.