THE BUS+

THE BUS+ is the ultimate SSL Bus Compressor

SRP £1,699.00 + VAT

If there is a single piece of analogue processing equipment that is synonymous with SSL, it must be the SSL Bus Compressor. From the very first commercially released SSL4000 B console in 1976 and through many generations of SSL consoles that have followed, the Bus Compressor has always been the stalwartof the console centre section.


For many of the world’s top engineers and producers, the Bus Compressor continues to be the most relied upon processing tool for making mixes sound bigger and more complete, with drive and energy from adding that legendary SSL glue and punch.


With THE BUS+, Solid State Logic have been on a mission to create the ultimate and most versatile incarnation of the Bus Compressor ever. The bedrock of the design remains faithful to the original circuit and using this as the foundation, they’ve built upon it, adding several unique colouration options and advanced processing tools. If you need it to be clean and punchy like the Super Analogue TM9000 Series version, it can be. If you need it to be gritty and grungy like an early 4000E, it can do that also. Or if you need over-the-top, saturated parallel compression for the drums, THE BUS+ has got you covered.


THE BUS+ circuit design not only utilises high-grade components, such as the 2181 THAT VCAs in the audio path for superior analogue performance, it is also incredibly flexible, offering four modes of operation and 3 distinct compression colouration options that can be combined to perfectly suit the genre you’re working on. As if that wasn’t enough,THE BUS+ features an all-new Dynamic Equaliser, a Transient Expander and comprehensive connectivity and routing options.


Dynamic Analogue Equaliser: D-EQ
THE BUS+ incorporates a host of advanced processing tools including the new Dynamic Analogue Equaliser (D-EQ).

The D-EQ is a powerful 2-band Dynamic EQ that can be placed before or after The Bus Compressor. Many engineers are familiar with Dynamic EQ plug-ins inside the DAW but analogue Dynamic EQs are few and far between.

A Dynamic EQ is a more 'intelligent' form of EQ that changes the gain of an EQ band proportionally in response to the signal level once above a set threshold. It allows you to modify the contrast between background material (under threshold) and forward material (above threshold).


  • The ultimate, most versatile incarnation of the Bus Compressor ever
  • Authentic SSL Bus Compressor circuit utilising high-performance 2181 THAT VCAs.
  • 4 modes of operation - Classic Stereo, S/C Stereo, Dual Mono or Mid-Side.
  • New Attack and Release time constant options - more flexibility to shape the Bus Compressor, including the new 'Auto 2' setting.
  • 3 distinct compression colouration options, which can be combined or used individually:
  • - 4K Mode, single VCA operation with variable harmonic distortion to bring some 'grit' and 'grunge' to the mix.
  • - LOW THD Mode reduces low-frequency distortion caused by compression, cleaning up the bottom-end.
  • - F/B Mode alters the compression characteristics for a more 'relaxed' style of compression.
  • Outstanding sonic performance and stepped pots designed for mastering and precision processing applications.
  • Built-in 2-band Dynamic EQ (D-EQ).
  • Transient Expander.
  • Configurable processing order - Bus Compressor pre D-EQ (default) or post.
  • External side-chain inputs and sends.
  • Variable side-chain High-Pass Filter control up to 300 Hz in 10 Hz steps.
  • Mix control for instant parallel compression.