1. INPUT: Use this 1/4” jack to connect your bass to the amplifier by means of a shielded instrument cable.

2. 0dB/-15dB: Use this switch to match the output signal level of your instrument to the amplifier.

If your instrument has standard pickups, setting the switch to the 0dB position (switch in the out position) should yield the best results. If your bass has active electronics or high output pickups, set the switch to the -15dB position (switch depressed).

3. MUTE: This switch, when depressed, interrupts the signal prior to the power amplifier, allowing you to tune your instrument in silence.

4. LEVEL: Use this control to adjust the output level of the Clean channel.

5. LOW: Use this control to adjust the low frequency output of the Clean channel.

6. LO MID: Use this control to adjust the lower-midrange frequency output of the Clean channel.

7. HIGH MID: Use this control to adjust the upper-midrange frequency output of the Clean channel.

8. HIGH: Use this control to adjust the high frequency output of the Clean channel.

9. EXPANDER: This switch, when depressed, activates the Expander circuit.

10. (LED): This LED illuminates when the Expander circuit is active.

11. –V–: Use this control to adjust the depth of the Expander circuit. As you rotate this control counter clockwise the signal becomes increasingly crisper and cleaner; clockwise makes the signal more punchy.

12. LEVEL: Use this control to adjust the level of the Expander circuit. This allows you to have two different playing levels - one with the Expander on, another with it off.

13. MASTER: Use this control to adjust the overall output level of the amplifier.

14. LIMIT LED: This LED illuminates when the internal limiting circuit is active. Occasional flashing during playing is normal. If the Limit LED remains illuminated, reduce the output level of the amplifier until the LED flashes.

15. : Use this jack to listen to the amplifier through a pair of stereo headphones. The internal speaker is disconnected when the headphones jack is used. To avoid possible damage to your hearing, do not use headphones for extended periods of time at extremely loud listening levels.

 

16. POWER: Use this switch to turn the amplifier on and off. The switch illuminates when the amplifier is on.

17. ELECTRONIC TUNER (top panel, not shown): The electronic tuner is active whenever the amplifier is turned on, providing constant, “real-time” tuning. The bottom row of LEDs indicate which note (string) is being tuned. The top row of LEDs provides directional queues to facilitate quick and precise tuning of your instrument. The indicated note (string) is properly tuned when only the center LED is illuminated.

18. AC LINE CORD (not shown): The grounded power cord should only be plugged into a grounded power outlet that meets all applicable electrical codes and is compatible with the voltage, power, and frequency requirements stated on the rear panel. Do not attempt to defeat the safety ground connection.

19. EXTERNAL SPEAKER: Use this jack to connect the amplifier to an external speaker cabinet. This jack is wired in series with the internal speaker, which remains active when this jack is used. A 4 ohm external speaker cabinet is recommended.

20. EXPANDER ON/OFF MUTE FOOTSWITCH: Connect a two-button footswitch (such as the Crate CFS-2) here for remote control of the Expander and the Mute function.

21. EFFECTS LOOP SEND: Use this jack to connect an external signal processor to the amplifier by means of a shielded signal cable. Connect the other end of this cable to the input jack of the external processor.

22. EFFECTS LOOP RETURN: Use this jack to connect an external signal processor to the amplifier by means of a shielded signal cable. Connect the other end of this cable to the output jack of the external processor.

23. BALANCED LINE OUT: Use this XLR jack to send a balanced line level signal to an external power amplifier, mixing board, or recording console.

24. PRE/POST: Use this switch to determine whether the Balanced Line Out signal is Post-EQ (switch depressed) or Pre-EQ (switch in the out position).

25. GROUND LIFT: This switch, when depressed, lifts the ground connection at the Balanced Line Out jack (#23).

This may help reduce hum in the Balanced Line Out signal.

26. VOLUME: Use this control to adjust the signal level at the Balanced Line Out jack (#23).