Check the listing for details. BEHRINGER A500 Professional 600-Watt 2-Channel Reference Amp Excellent Cond. Color: Black, Condition: Used, Made in China. Listed at 175.00 USD. The BEHRINGER A500 Professional 600-Watt 2-Channel Reference Amp is a high-quality power amplifier designed for professional audio applications. With 2 channels and 2 inputs, it offers stereo L/R RCA audio outputs for versatile connectivity. Made by Behringer, a trusted brand in pro audio equipment, this amp delivers powerful sound quality in a sleek black design. Ideal for musicians and audio engineers looking for a reliable and high-performance amplifier for their setup.