This document is the user manual for the Yamaha Original Sound acoustic-electric guitar. It explains how to connect the instrument to an amplifier, use the built-in preamp, and operate the onboard controls such as volume, 3-band equalizer, AMF controller, and tuner. The manual also includes safety precautions and battery replacement instructions. This manual is written in Chinese.
The instrument requires two AA size alkaline batteries.
Battery life is approximately 180 hours when not using the tuner.
The built-in preamp automatically turns on, which can drain the battery.