The TSD-PA122G 4 ohms stereo amplifier is perfectly suited for almost any general amplification requirement.Perfect for adding sound reinforcement to small projector systems as it provides ample power to drive up to four 8 ohms loudspeakers in a classroom or boardroom application.Output is 12W per channel at 4 ohms or 24W bridged mono at 8 ohms.Input is via balanced stereo phoenix style and unbalanced RCA connectors.Front panel gain controls provide adjustment for both left/right or bridged outputs and include removable knobs.