SSL B-Series Dynamics Module for 500 SeriesThe B Series Dynamics Module continues the expansion of the SSL 500 Series Modules and comprises of a compressor limiter and an expander gate. It is modelled on the original circuit design of the SSL 4000 B Series channel strip as Installed in the 80s in 'The Stone Room' at Virgin's Townhouse Studio (London), Le Studio (Montreal) and Record Plant (LA). Features: Legendary SSL 4000 B Series Channel Strip circuitry Stepped compression ratios 2: 1, 4: 1,