SSL 4000 G Bus Compressor is Waves' emulation of the SSL G-Master Bus Compressor, developed under license from Solid State Logic. It reproduces the desk compressor that became the default choice for gluing a mix together, the last stage before a limiter in countless professional sessions. Its reputation comes from a specific behaviour: program-dependent compression that tightens and densifies a mix without flattening it, adding cohesion while preserving transient life. Placed across a stereo mix bus, drum group, or instrument bus, it is one of the most reliably useful processors in a mixing toolkit, and its fixed ratio and threshold controls with bus-suited attack and release settings keep the decision-making narrow. It appears as part of Waves' SSL 4000 Collection, which also provides channel strips from the acclaimed E- and G-series, classic mic preamps, and both "black" and "brown" knob EQ options, so the modules can be mixed and matched into a customised SSL-style setup. It runs in VST3, AU, and AAX formats on macOS and Windows with Intel and Apple Silicon support, compatible with all major DAWs. #SSL #SSL4000 #SSLGBusCompressor #SolidStateLogic #BusCompressor #MixBus #Compressor #Glue #Mixing #Mastering #AnalogModeling #Waves #MusicProduction #VST3 #AU #AAX #ProTools #LogicPro #AbletonLive #Cubase #StudioOne