81234567891011121314 16 1820212223 25262415 17 191. INPUT – Connect your bass guitar here using a standard ¼” unbalanced instru-ment cable.2. TUNER Output – Use this jack to connect to an electronic tuner using a ¼” TRScable. The TUNER output is always active, even when the MUTE switch is engaged,which allows you to tune your instrument silently. This output may also be used asa line level direct output feed.3. ACTIVE Switch – When selected, this green backlit switch reduces the input sen-sitivity by 15dB to accommodate the higher output signal of basses with built-inactive electronics.4. OVERDRIVE – When the O.D. switch is selected (see #5), this control knob adjuststhe amount of harmonic content and overdrive to the input signal. Slowly turningthis knob allows you to add a little tube warmth, some edgy dirt, or all-out fuzz.5. O.D. Switch – When selected, this green backlit switch engages the OVERDRIVEcontrol. A footswitch can be connected to the amplifier to switch the OVERDRIVEon and off (the front panel switch is disengaged when the footswitch is pluggedin).6. COMPRESSOR – This knob determines the amount of compression by adjustingthe threshold level. The compressor allows you to control the overall dynamicrange of your performance by reducing sudden peaks, and increasing the sustainof the instrument. At the fully counterclockwise position, no compression is ap-plied. As the knob is turned clockwise an increasing amount of compression isapplied. For more information, see the “About Compression” section on page 17 ofthis manual.7. Compressor Light – Provides a visual indicator of the status of the compressioncircuitry. This red LED lights when the input signal crosses the threshold level andactivates the compressor circuit.Front Panel Controls