Quested AP750 2 Channel Class AB Amplifier Quested AP750-2 Channel Class A/B Amplifier is a 2RU 19″ rackmountable amplifier designed for powering passive monitors in recording studios and film production facilities. The amplifier is rated for 750W per channel at 4Ω and 450W per channel at 8Ω. For I/O, the amplifier features balanced 3-pin XLRs [...]