GT-6, GT-8: What is COSM April 10, 2023 06:02 Updated Follow COSM is an abbreviation for Roland's "Composite Object Sound Modeling" technology that shapes audio by applying the sonic characteristics of popular or classic microphones, guitars, guitar amplifiers and studio reference speakers. Related articles GT-8: Four Cable Method Connections GT-10: Effects List GT-6, GT-8: Turning Off the Preamp Section GT-1000 GT-1000CORE: Can I connect both footswitch and expression pedal to one CTL jack at the same time? BR-1200, BR-1200CD: SYMPTOM: Unable to Burn a CD