The LMC+ module is the latest incarnation of an analogue processor that started life as a very humble return talkback compressor (Listen Mic Compressor) in SSL’s earliest SL 4000 series consoles.
The SSL ‘Listen Mic’ Compressor was, throughout the 1980’s, the secret weapon in many producers’ sonic arsenal of recording techniques. Originally designed to prevent overloading the return feed from a studio communications mic, its fixed attack and release curves were eminently suitable for use on ambient drum mics. The console surgery required to gain access to the compressed output was performed on many early E Series consoles before it became a standard modification on later production systems.

This module has been specifically designed to operate in a 500
format rack such as the API lunchbox® or equivalent. In common
with many such modules, the nominal input/output level is +4dBu.
The module is a stereo compressor, designed to provide flexible
control over a stereo mix. The compressor design is based around
the Bus Compressor found in the SL 4000 G Series console.

The VHD+ Pre Module for the popular 500 format modular rack platform makes the uniquely versatile VHD based preamp technology from Duality, SSL’s industry leading large format studio console, available for studios of all sizes. The VHD+ Pre module is an immensely versatile recording and processing device. It can deliver ultra clean SSL SuperAnalogue^TM grade recordings but also features a switchable VHD mode. SSL’s patented Variable Harmonic Drive (VHD) system uses a 100% analogue signal path to generate rich harmonic distortion.