Professional 4-channel power amplifier in an extremely compact 19" 1U-housing (H: 44mm) The unit houses 2 separate class-D amplifiers that can be configured independently to obtain the following combinations: Both amps in stereo mode: 4x 200Wrms @ 4Ω (4x 100Wrms @ 8Ω) Both amps in mono mode: 4x 200Wrms @ 4Ω (4x 100Wrms @ 8Ω) Both amps in Bridge mode: 2x 400Wrms @ 8Ω 3 Channel mode (2 sattelites + sub): 2x 200Wrms @ 4Ω (or 2x 100Wrms @ 8Ω) + 1x 400Wrms @ 8Ω 120Hz High Pass Filter on/off switch for satellite speakers 120Hz Low Pass Filter on/off switch for subwoofer DC fault + high temperature + overload and short circuit protections A plastic cover (included) can be installed to prevent access to the level knobs Balanced XLR inputs Speakon® compatible outputs