To actively bi-amp an integrated, requires being able to separate the preamp from the power amp, and installing an active crossover between. The Cronus doesn’t have a Pre-Out/Main-In facility. It does have a variable output(could be used for a woofer amp), but- that won’t allow you to filter lows from the main amp. A Tape loop would have worked, for inserting a crossover, also. You could get away with connecting an amp of identical power/gain/sensitivity as the Cronus, to the variable output. Both amps would be handling full spectrum and the speaker system’s internal crossover would be doing the dividing. Not ideal!
