Cambridge, Massachusetts design studio Superlative builds electronic musical instruments, including the rechargeable SB01 analog synthesizer. Drawing on the golden age of analog design, the company pairs classic circuitry with unusually portable hardware: the SB01 is machined from a single aluminum block, offers 24-hour battery life, and is designed to be repairable. Superlative says its synthesizers are engineered and built in the United States for musicians who need durable instruments for performance and studio work.