This comprehensive service manual for the McIntosh MX-120 provides the most detailed information available for servicing this iconic audio component. Written directly by the manufacturer and used by dealership technicians, it offers a deep understanding of the MX-120's inner workings. The manual covers chassis and electrical aspects in detail, presenting numerous illustrations, schematics, and wiring diagrams to guide you through every step. You'll find technical diagnostic procedures for pinpointing problems, detailed instructions for disassembly and component installation, and clear explanations of every step of the repair process. This manual empowers you to achieve professional-level repairs, ensuring your McIntosh MX-120 continues to deliver exceptional audio performance for years to come.

The McIntosh MX-120 is a legendary audio component, renowned for its exceptional sound quality and iconic design, making it a highly sought-after piece for audiophiles and collectors alike. It is a 120-watt per channel stereo power amplifier released in 1972, marking the beginning of a new era for McIntosh's amplifier lineup. The MX-120 boasts an impressive feature set, including a proprietary "Autoformer" output transformer that delivers a remarkably smooth and powerful sound, even at low volumes. Its power supply utilizes a massive transformer, capable of delivering 120 watts per channel into an 8-ohm load, and the amplifier's circuitry is meticulously designed for high fidelity reproduction. This combination of power and precision allows the MX-120 to drive even the most demanding speakers with ease and accuracy. The McIntosh MX-120's distinctive aesthetics are equally compelling. Its sleek, brushed aluminum faceplate, adorned with the iconic McIntosh logo and illuminated blue meters, exudes an aura of elegance and sophistication. The distinctive "black glass" front panel houses a series of control knobs, including volume, tone, and balance, providing fine-grained control over the listening experience. The MX-120's solid construction and meticulous craftsmanship ensure its enduring appeal and long-lasting performance. It is a statement piece in any audio system, representing a pinnacle of audio engineering and design, making it a coveted item for vintage audio enthusiasts and collectors worldwide. Its legacy continues to inspire, with McIntosh continuing to produce high-quality audio components that carry on the brand's rich history of innovation and unparalleled sound performance.