It is on when the switch is pushed in. Turn this switch on when connecting a high output impedance device such as guitar or bass. 5. PAD switch This switch lowers the level of the input signal by 26 dB. The pad is on when the switch is pushed in. When a line level input source is connected, turning the pad on will allow the gain trim knob to have a wider useful range of adjustment. 6. Compressor mode switch This switch changes the compressor’s response speed. Use the Fast setting for short sound

4. Connect the guitar or bass you want to tune or a CM-100L contact mic to the input jack. If you want to tune an acoustic instrument, position the sound hole of your instrument near the built-in mic. If a cable is connected to the INPUT jack, the built-in mic cannot be used. 5. Play a single note on your instrument. The “character display area” in the center of the DT4 will show the name of the note that is closest to the pitch you played. Tune your instrument so the desired note name appears.