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The GA-40 is a compact, dedicated guitar and bass tuner with automatic pitch detection. It features a large, easy-to-see LCD needle-style display that combines the accuracy of an LCD with the easy viewing of a needle indicator. It is designed to be convenient and pocket-sized, suitable for stage or studio use.

The tuner supports seven-string guitars (7B through 1E) in Guitar mode and six-string basses (Low-B and Hi-C) in Bass mode. It includes a Sound Out function that plays a reference tone through its internal speaker for tuning by ear. The GA-40 also provides a Quinta Flat Tuning mode for dropped tunings and includes an output jack for bypass.

• Dedicated guitar and bass tuner with large LCD for easy viewing
• In Guitar mode supports seven-string guitars (7B through 1E)
• In Bass mode supports six-string basses (Low-B and Hi-C)
• Sound Out function produces a reference tone from the internal speaker
• Quinta Flat Tuning mode supports dropped tunings of one through five semitones
• Conveniently thin and compact, pocket-sized
• Output jack (bypass) added for checking tuning during performance
• Auto Power Off function turns off after twenty minutes
• Approximately 85 hours of continuous use with zinc-carbon batteries

• Display: LCD needle-style display
• Battery life: Approximately 85 hours of continuous use (continuous A4 input, Meter mode, zinc-carbon batteries)