The Quad 22 is a vintage preamplifier control unit originally developed in the 1950s, specifically designed for use with the Quad II power amplifiers. The Quad 22 utilizes two EF86 tubes for its moving-magnet (MM) phono stage and two 12AX7 tubes for line-level amplification. The design incorporates features that were advanced for its time, focusing on simplicity and functionality. It was engineered to be mounted within a wooden console, with functional controls subtly integrated to create a visually cohesive environment. The preamp offers multiple input and output terminals, which can be modified or updated to modern standards, including RCA inputs for easier connectivity with contemporary audio sources. Over the years, it has undergone various modifications to improve its sound quality and compatibility with current technology. Modifications typically enhance its electronic components including the use of metal film resistors and modern capacitors to reduce noise and improve durability. Re-engineered versions retain the iconic look while offering improved performance and reliability. The Quad 22 is known for its robust construction, capable of delivering clean audio signals with minimal distortion, and is often appreciated by audiophiles who enjoy vintage audio equipment.

The Quad 22 is a vintage preamplifier control unit originally developed in the 1950s, specifically designed for use with the Quad II power amplifiers. The Quad 22 utilizes two EF86 tubes for its moving-magnet (MM) phono stage and two 12AX7 tubes for line-level amplification. The design incorporates features that were advanced for its time, focusing on simplicity and functionality. It was engineered to be mounted within a wooden console, with functional controls subtly integrated to create a visually cohesive environment. The preamp offers multiple input and output terminals, which can be modified or updated to modern standards, including RCA inputs for easier connectivity with contemporary audio sources. Over the years, it has undergone various modifications to improve its sound quality and compatibility with current technology. Modifications typically enhance its electronic components including the use of metal film resistors and modern capacitors to reduce noise and improve durability. Re-engineered versions retain the iconic look while offering improved performance and reliability. The Quad 22 is known for its robust construction, capable of delivering clean audio signals with minimal distortion, and is often appreciated by audiophiles who enjoy vintage audio equipment.