The Dr-670 contains a separate Bass part that's incorporated in the preset patterns. Use the following procedure to hear only the bass or only the drum parts:
1. Hold SHIFT and press UTILITY.
2. Turn the TEMPO/VALUE dial to select the part you want to solo.
3. Hold SHIFT and press PATTERN PLAY.
4. Select a Pattern.
5. Press START.
Note: To turn off the Mute feature, hold down SHIFT and press UTILITY, release SHIFT, and then select ALL by turning the TEMPO/VALUE dial.
1. Hold SHIFT and press UTILITY.
2. Turn the TEMPO/VALUE dial to select the part you want to solo.
3. Hold SHIFT and press PATTERN PLAY.
4. Select a Pattern.
5. Press START.
Note: To turn off the Mute feature, hold down SHIFT and press UTILITY, release SHIFT, and then select ALL by turning the TEMPO/VALUE dial.