Power Amplifiers Extron Power Amplifiers deliver high performance audio and are available in a wide range of single and multi-channel configurations for small to large AV installations. They include an advanced, energy efficient Class D amplifier design, are ENERGY STAR® qualified, and offer several features that simplify integration. On this page: MPA Series XPA Ultra Series XTRA Series MPA Series MPA 152 Plus Stereo Amplifier - 15 Watts Per Channel MPA 601 Mono 70/100 V Amplifier - 60 Watts XPA Ultra Series NewXPA U 358 Eight Channel Low and High Impedance Amplifiers35 Watts Per Channel NewXPA U 358C Eight Channel Combo Amplifier35 Watts Per Channel NewXPA U 1004 Four Channel Low and High Impedance Amplifiers100 Watts Per Channel NewXPA U 1004C Four Channel Combo Amplifier100 Watts Per Channel XTRA Series XPA 1002 Two Channel Low and High Impedance Amplifiers – 100 Watts Per Channel XPA 2001 Mono 70/100 V Amplifier - 200 Watts XPA 2002 Two Channel Amplifier - 200 Watts Per Channel XPA 2003C Three Channel Combo Amplifier - 200 Watts Per Channel XPA 2004 Four Channel Amplifier - 200 Watts Per Channel XPA 4002 Two Channel Amplifier - 400 Watts Per Channel