Amcron AMP ps400

In perfect working condition studio AMP used as studio monitor amplifier
Rated for 16, 8 or 4 ohm use; safe with all loads, even reactive ones.
Bridged Mono: 660 Watts into 8 ohms
Stereo: 330 Watts/channel into 4 ohms; 190 Watts/Channel into 8 ohms
Dimensions: 19" wide x 7" high x 10.1" deep (behind front mounting surface)
Weight: 55 lbs

Built around its multi-mode circuit design, this operational Crown PS-400 power amp was designed, built and available exclusively for professional sound systems. It features a low frequency interrupt (user defeatable), directing dangerous levels of sub-audio output by tracking low-frequency amplitude to determine the allowable proportion of sub-audio output. The multi-mode design uses output devices efficiently and powerfully, minimizes amp distortion—whether audible or even test-bench detectable— and provides long term reliability. All aluminum construction for minimum weight and maximum heat conduction.