Pass Labs was founded by legendary audio designer Nelson Pass in 1991.
Pass Labs produces ultra high-end, robust two-channel solid-state electronics and loudspeakers (many operating in pure Class A), based on the numerous designs and patents held by Mr. Pass.
Notable Pass Labs products include:
Pass Labs Class A XA.5 Series amplifiers
Pass Labs Class AB X.5 Series amplifiers
Pass Labs INT-30A and INT-150 integrated amplifiers
Pass Labs XP Series of preamps.
Most recently, Pass Labs has expanded into the speaker market.