The SPA Series amplifiers from QSC are two half rack 1U, convection cooled power amplifiers delivering two or four channels of 60watts per channel into 4ohm and 8ohm. These amps can also be bridged to supply 200watts into 4ohm and 8ohm, and up to 250watts into 70V or 100V loads making them extremely flexible for Low-Z or High-Z applications. Utilizing an advanced Class-D amplifier design and Universal Power Supply the SPA Series are amazingly efficient allowing them to be convection cooled and are ENERGY STAR® qualified with quiet auto-ramp standby functionality. The SPA2-60 and SPA4-60 are housed in an unobtrusive black painted 1/2RU chassis with unique mounting hardware enabling rack, table and wall mounting capabilities.