Crest CPX 900 Power amplifier in good condition.
CPX™ Series Power Amplifiers: Three rugged, ultra-affordable power designs in the great Crest Audio tradition. Included are built-in subwoofer crossovers, low-cut filters to prevent woofer cone flutter, fan cooling, Speakon® output connectors and more.
Gain Comparator Limiting. When a signal has waveform peaks that exceed the amps’ power-supply rails, waveforms get chopped off, or “clipped.” This undesirable distortion most often happens when the amp is turned up too high (too much gain). GCL™ senses clipping (or current limiting) and dynamically reduces the gain for a few milliseconds. You can drive the CPX amp to its maximum (and beyond) without hearing audible distortion.
Power capabilities range from 180 Watts to 2200 Watts. CPX amps will drive loads that range from 8 Ohms stereo to 2 Ohms stereo, or 4 Ohms bridged.
Feature set: With a comprehensive set of features including built-in signal limiting, low pass filters and low frequency crossovers with direct outputs, the CPX line addresses several applications and serves as a low-cost solution for most power amplification needs.