Warm Audio WA76 (Stereo Pair)
Linked Stereo FET Compressors
The WA76 pair is calibrated as a set.
In dual mono operation the two units operate independently and gain limiting is not shared.
In stereo configuration, all controls are set identically on both units. The output of the internal pre-amplifier stage in each unit is buffered and combined with the paired unit and fed to the compression circuit. Both units respond to the combined input signal, resulting in the same amount of signal dependant gain reduction being applied to both limiting amplifiers. The audio content however, is not mixed and stays integral. The result is that left-right image shifts produced by the dual mono operation are eliminated in favour of stereo compression.
The WA76 pair are calibrated to have matched output levels to within 0.5 dBu and matched Gain Reduction to within 10% while operating with all controls set top dead centre and the 20:1 ratio selected.
The WA76 Limiting Amplifier is a modern reproduction of the Classic 1176 Revision D.
Valiant effort has been made to remain faithful to the original designs including the use of Reichenbach Engineering's (now CineMag) transformer designs that were used in the original. The classic 1176 was a major breakthrough in limiter technology - the first true peak limiter with all transistor circuitry offering superior performance with a signature sound.
Please note: the linked pair has a longer turn around due to the modification.