As one of two exceptional monoblock options in our flagship Reference range, the SPM 6000 MkII is a no-compromise 750-watt mono amplifier (against 1,000 watts in its SPM 14000 MkII sibling). Along with its 14000 stablemate, the SPM 6000 MkII is one of the largest mono amplifiers we have ever built and its performance is spectacular.