Rupert Neve Portico 5043 compressor-limiter

The 5043 Limiter-Compressor features fully controllable dual mono or stereo operation plus innovative feedforward/feedback detection switching and yields a combination of rich warmth, flexibility and precision.
Perhaps the most significant aspect of the Portico 5043 is the ability to switch between feedforward and feedback detection. Feedback detection — controlling the VCA with a rectified voltage from the unit’s output — is intrinsic to the musical dynamic response of early compressors. However, the very nature of a feedback compressor limits the attack time of the compression circuit. To offer faster, more technically accurate response times, feedforward detection was implemented on this unit.
Each channel of the 5043 encompasses individually controllable threshold, makeup gain from -6dB to +20dB, ratio and VCA detection mode (feedforward/feedback). The channels may be used independently or connected in sequence to provide two separate control slopes on a single source. The D.C. control circuits may be linked via a front panel push-button so that the level of each channel may be held in a constant relationship for stereo operation. With the compressor inactive, the 5043 may be used as a transformer-coupled, high-performance line amplifier.