This service repair manual covers the Quad 707 audio component. Engineered for exceptional audio reproduction, the Quad 707 delivers 70W per channel into 8 ohms and a peak of 100W per channel into 4 ohms, with a total harmonic distortion of less than 0.01%. Its robust design features a damping factor greater than 150 and a wide frequency response of 20Hz - 20kHz ±0.5dB, ensuring clarity and precision. With line input sensitivity at 100mV and phono input sensitivity at 2mV, it accommodates various audio sources, boasting signal-to-noise ratios of >105dB for line and >85dB for phono.

This comprehensive manual provides essential information for maintaining and repairing the Quad 707. It includes detailed schematic diagrams and wiring schematics, crucial for understanding internal component layouts and troubleshooting. Maintenance sections cover recommended cleaning procedures for the exterior and vents, guidance on internal component replacement, and important calibration notes regarding bias adjustment. Fuse information is also detailed, referencing specific ratings within the schematics. This resource is designed to assist owners and technicians in ensuring the optimal performance and longevity of the audio unit.