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Resurrecting the legendary punch, glue, and authority of the SSL mix bus compressor, the Solid-State Logic Bus Comp Classic is a 2-channel stereo VCA compressor sporting THAT 2181 VCAs and precision-stepped controls. With the Variable VCA Drive, you can shift through decades of SSL dynamics, from SuperAnalogue transparent to the aggressive grit of the 4K consoles.
The Variable VCA Drive can allow access to up to 10% THD VCA drive. Side-chain functions include an adjustable side-chain high-pass filter (30 to 185 Hz) and a selectable external stereo side-chain input. The Bus Comp Classic features expanded ratio options, with selectable ratios ranging from 1.5:1 to 10:1. Ratio, Attack, Release, and S/C HPF are all stepped for easy recall. Further controls include Make-Up Gain (up to 20 dB), Threshold (-20 to +20 dB), and VCA Drive. The unit sports an optional SSL Auto Release mode for program-dependent compression that responds dynamically to changing audio material. The Bus Comp Classic features an analog VU meter and stereo XLR connections for input, output, and external side-chain.
- New Variable VCA Drive extends Bus Comp Classic far beyond a single sonic signature, placing decades of SSL console character under one continuously variable control.
- With VCA Drive at its cleanest setting, the VCAs operate in a balanced configuration, for the low-distortion clarity and powerful transient response associated with SSL’s SuperAnalogue generation 9000 Series and today’s Oracle and Odyssey consoles.
- As soon as the control is activated, the VCAs operate in an unbalanced configuration, recreating the harmonic behavior and character of classic SSL designs such as the FX384 and 4000 Series consoles.
- Increasing the control further progressively introduces additional color and saturation, moving from subtle console-style richness through to the denser, more aggressive character associated with early 4K designs.
- From polished mix finishing to heavily driven drums, to parallel compression approaching 10% THD, Variable VCA Drive lets you decide how clean, colored, or confrontational the compressor becomes.
Each compression ratio has its own carefully defined behavior. The renowned 2:1 mode features an exceptionally gentle soft-knee response, allowing gain reduction to develop progressively for transparent mix bus processing. Higher ratios deliver increasingly assertive control and greater density, making them equally effective on stems, drum buses, and parallel chains.
Use it to bring lead and backing elements together into a cohesive arrangement, shape the movement of an instrument bus, add urgency to drums, or apply the final touch that makes a mix feel complete. Its focused workflow makes it an immediate creative tool for artists and producers, while providing the precision and repeatability engineers depend on for professional mixing.
The genuine stereo external side-chain input supports both creative processing and advanced delivery workflows. When printing individual stems, the complete mix can feed the side-chain while each stem passes separately through the audio path. Every stem therefore receives the gain-reduction behavior it experienced within the full mix, helping preserve the balance and movement of the approved production across alternate versions and deliverables.