The Valley People 440 is a VCA compressor which uses the revered TA-101 VCA circuit to combine a compressor, limiter, clipper and expander in one box.
Valley People was one of the later incarnations of Allison Research. The company was started by Paul Buff, an engineer who worked with Frank Zappa in the early days. Buff designed the amazing Gain Brain compressor for Allison Research and the equally extraordinary Dynamite compressor for Valley People. He patented the legendary Valley People TA-101 VCA which formed the basis of many of his designs.
The 440 is a VCA compressor but it uses the sidechain know-how and control circuitry of Valley to enable it to combine a compressor, limiter, clipper and expander in one box. VCA compressors use a Voltage-Controlled Amplifier as the gain control element. VCA design has been the subject of much design effort & optimisation over the years and high-end products offer extremely transparent gain control. Examples of clean, transparent VCA compressors include Aphex products, various SSL bus compressor clones and many of the Valley People / Valley International designs
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