Pass Labs

Pass Labs, founded by Nelson Pass in 1991 and based in Auburn, California, is a renowned high-end audio company specializing in the design and manufacturing of state-of-the-art amplifiers, preamplifiers, and audio electronics. Known for their pioneering work in Class A and Class A/B amplification, Pass Labs products feature innovative technologies such as SuperSymmetric circuitry and MOSFET output stages. The company gained early acclaim with its Aleph series of Class A amplifiers and has continued to set standards for sound quality, engineering excellence, and reliability, catering to discerning audiophiles worldwide.[1][2][3][5][6]