This document pertains to the McIntosh MX-115, an Audio Preamplifier/Tuner designed for high-fidelity audio reproduction. While specific production years are not detailed, its design suggests an origin likely in the mid to late 20th century. The MX-115 features high-level and phono inputs, AM/FM tuner capabilities, and comprehensive control over volume, tone, and balance. Its connectivity includes multiple RCA inputs and outputs, and it operates on AC mains power. This unit represents a significant piece of audio engineering, offering detailed control and robust performance for discerning listeners.

This Service Manual provides comprehensive technical information for the McIntosh MX-115, focusing on its chassis and electrical systems. It is intended to assist owners, technicians, and enthusiasts in understanding, maintaining, and repairing this audio component. The manual includes detailed technical data, numerous illustrations and schematics, and specific guidance on component-level troubleshooting and repair. With its extensive coverage, this document serves as an invaluable resource for ensuring the optimal performance and longevity of the MX-115.