KORG HA-40 Owner's Manual

To calibrate the tuner, press and hold the 'Calibration' button until the display shows the desired frequency. The default is 440Hz, but you can adjust it in 1Hz increments from 410Hz to 480Hz.
Ensure the instrument is properly connected and the input is clear. Check the battery level and replace if necessary. If the problem persists, reset the tuner by turning it off and on again.
Yes, the HA-40 allows for calibration adjustments, making it suitable for various tuning systems by setting the reference pitch between 410Hz and 480Hz.
To extend battery life, turn off the tuner when not in use and use alkaline batteries for longer performance. Additionally, store the tuner in a cool, dry place.
Use a soft, dry cloth to clean the exterior of the tuner. Avoid using any solvents or abrasive materials. Regularly check the battery compartment for leaks or corrosion.
A flickering display might indicate low battery power. Replace the battery with a new one and ensure it is inserted correctly.
Connect your guitar to the input jack of the tuner, then connect the output jack to your amplifier. This setup allows simultaneous tuning while using the amplifier.
First, check if the battery is correctly inserted and not depleted. If it still doesn’t power on, try a new battery. If the problem persists, contact KORG support for assistance.
Yes, the HA-40 is capable of tuning bass guitars. Ensure the correct octave range is selected and the bass is properly connected to the input.
The auto power-off feature turns the tuner off after approximately 20 minutes of inactivity to conserve battery life. This feature cannot be disabled.