Download Your FREE LMC-1 Plug-In NOW - Every now and again a piece of audio equipment comes along that defines the sound of an era. Back in 1979 Solid State Logic gave birth to a legendary recording console. The SSL SL 4000E Master Studio System forever changed how records would be recorded and mixed, heralding a new age in popular music. In less than three years, every major studio worldwide featured at a least one room with an SSL E Series console.