Owners manual are available here: Opti-FET Compressor Manual (286KB)
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ABOUT THE DESIGN:
The FEA Opti-FET Compressor is designed with both audiophile and studio quality features that many musicians enjoy.
The new audio path has been redesigned with the FEA 3S output amplifier circuit for warm tone and excellent noise rejection that features a “class A” FET output driver. The 3S amplifier utilizes an audiophile grade Texas Instruments™ (formerly Burr-Brown™) SoundPlus™ operational amplifier and a class-A Fairfield™ FET driver for outstanding performance. The operational and FET driver amplifiers are integrated in a unique way to take advantage of the favorable qualities of both types of amplification. This 3S amplifier has selectable modes of operation for a clean or warm tone. The warm tone mode was modeled to match the tone of the original OPTI-FET circuit. The input stage is a high impedance CMOS, hi-fi amplifier buffer with internal RFI protection. The input amplifier has been designed to have minimal signal distortion and noise, with maximum headroom for all input signal levels.
Another feature in the FEA OPTI-FET Compressor is the extensive side-chain control which is not commonly found in most pedal type compressors today. Like many quality studio rack compressors, the OPTI-FET compressor has all of the common controls available to the user to accurately shape his or her tone. Along with the full feature set of side-chain controls, a three band equalizer is available. This EQ only affects the amplitude of frequencies of the signal in the compressor control circuits. This EQ allows the user to modify the threshold setting by frequency band. The OPTI-FET compressor also has a side-chain loop feature, similar to many rack compressors. This allows the user to be more creative with the use of other outboard pedals. Multi-band EQ, or buffered volume pedals are a few that can make this pedal even more versatile when used in the side-chain loop.
For technical specifications, please review the Opti-FET Compressor Manual (286KB)
May 19, 2010 - News: Press release on Premier Guitar -- FEA Labs Introduces Opti-FET Compressor
May 19, 2010 - News: Press release on Harmony Central -- FEA Labs Presents: The Opti-FET Compressor
Specifications and design are subject to change without notice. However, we will make every attempt to keep information on the web site current to the latest product revision.