This manual covers the Quad 22 preamplifier. While specific production years are not detailed, this audio component is designed for high-fidelity sound reproduction. Its engineering focuses on delivering exceptional audio quality, ensuring a reliable and superior listening experience for discerning users.

This Service Repair Manual is provided in English and offers the most complete schematic available for the Quad 22 preamplifier, including essential wiring diagrams. It is intended to assist owners and technicians in maintaining and repairing the unit, covering technical details relevant to its electrical systems and overall functionality.