Max power 2 ohms 250W x 4; RMS power 4 ohms 100W x 4; max bridged power 4 ohms 50W x 2. * Signal-to-noise ratiomore than102db; THD 0.01%. * Unique rubber sealing door tightly seals all control panel openings when not in use. * In-Line weather-proof connectors for all input/output connections, which are run through grommeted openings in end panels.