Chord EpicX ARAY Analogue Subwoofer Cable Processors both channels driven600 watts x

both channels driven600 watts x 2 @ 4 Ω RMS

but you need a few more channels

40 dB Setting: >85dB

Continuous power output (all channels driven): 250 watts RMS x 3

The two parts are connected together by  sturdy interconnects

Chord EpicX ARAY Analogue Subwoofer Cable Processors both channels driven600 watts xThe Epic Analogue subwoofer cable features Chord's Tuned ARAY conductor geometry and carries a musical signal with a high degree of coherence and detail. Tuned ARAY conductor geometry was originally developed for the Chord Sarum cable range. Tri conductor configuration, silver plated conductors with PTFE insulation. Internal PVC jacket reduces mechanical noise and correctly spaces high frequency effective dual layer combination shield. Built by hand