She has two output jacks (Out and Bypass). Plug the instrument to be tuned into the tunerís IN jack. The OUT jack is then connected to the amplifier. In this configuration, the signal from the instrument will be muted while in tuning mode. This is usually preferred as you can tune in silence. If
you prefer the signal from your instrument to be audible while tuning, use the BYPASS OUT to connect the tuner to the amplifier. In this configuration the signal from the instrument bypasses the mute function and will always be sent to the amplifier whether in tuning or play mode. The Bypass out is also 100% isolated from the tuning circuitry to leave your instruments tone untouched. What this means is that while in play mode the input signal does not travel through the tuning circuit, so it will not degrade or change your instrument tone. For best battery life, unplug the instrument cable from tuner input when not in use.
Keep'n it on the low down