Just like with teh Stratos monos. It's the same identical board, and with the Sl design, you open up the floodgates once you mono it out. This does NOT involv any bridging o any sort by cutting off part of the amp, but instead, we'll channel both, the left and the right channel into a single channel, which vastly improves the performance and the current delivery. That's one reason why we measure and match every single transistor in the amp per channel and per amp dead on. When we channel the mono now, all outputs are identical, and thus, there is total coherency in the tonality, harmonis, and the staging.