The McIntosh C20 is a classic vacuum tube preamplifier that was produced during the 1960s by McIntosh Laboratory. It features a distinctive design with a glass front panel, which highlights its analog meters and illuminated controls. The C20 is equipped with a variety of input options, including MM (moving magnet) and MC (moving coil) phono stages, as well as several line-level inputs. Its design focuses on producing high-fidelity audio with minimal distortion. The amplifier employs a combination of vacuum tubes for warmth and richness in sound quality, making it appealing to audiophiles and music enthusiasts. The C20 also includes adjustable tone controls, allowing users to customize their listening experience. The build quality is exceptional, featuring a robust chassis and premium components to ensure durability and performance longevity. Specifications include a frequency response range from 20 Hz to 20 kHz, total harmonic distortion of less than 0.1%, and an output impedance of 600 ohms. The C20 is often praised for its ability to reproduce the nuances of music effectively, contributing to its status as a collector’s item.
