Polk Audio PSW 10 10-INCH SUBWOOFER The IA-4 is our flagship

The IA-4 is our flagship and most popular integrated amplifier

HiFiMAN has engineered some of the most renowned planar magnetic headphones

HDAM® SA3 circuitry for clean signal and optimal dynamics

Marantz Current Feedback amplifiers reduce the need for phase compensation by minimizing Negative Feedback (NFB)

pure aluminum tweeters

Polk Audio PSW 10 10-INCH SUBWOOFER The IA-4 is our flagshipPolk Audio PSW 10 CNet. com says, "The PSW10's deep bass capabilities were impressive, but its definition and control were really special." Big, affordable, and fun. Add deep bass excitement and extended dynamic thrills to your music or movie sound system with an easy to choose, easy to connect and easy to use powered subwoofer. LASER BASED KLIPPEL MEASUREMENT TECHNOLOGY Our state of the art Klippel distortion analyzer optimizes the woofer's motor