Product Detail Compact size 1/4" (6.3mm) TRS, XLR and barrier strip balance inputs Binding post and Neutrik Speakon® outputs Front mounted gain controls for easy access Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom . The "QSC RMX1850HD Stereo Power Amplifier" is best product for you. We recommended QSC RMX1850HD Stereo Power Amplifier