Back Panel Features- Speaker Output:
Connects the amplifier to your cabinet. This Speakon combo jack allows for either Speakon or ¼” speaker cable operation.
*WARNING: Do not use an instrument cable with this jack. Using an instrument cable can damage your amplifier.- Min-Load:
Press when using a 2 ohm load. You can use this control to lower the output if your 4 ohm cabinet is not able to handle more than 500W (you can also get 350W with an 8 ohm cabinet in this configuration).- Pre Amp Out:
This output connects the preamp to a different power amp.- Power Amp In:
This output connects the preamp to a different power amp.- Post-Pre:
Selects what signal will be delivered by the DI output. Selecting PRE, sends a clean copy of your input bass signal. Selecting POST delivers a signal processed by the preamp of the amp (gain, distortion, eq, master, etc.)- Ground Lift:
Lifts the ground of the DI XLR output. If a ground noise in you DI signal is experienced, try changing the setting of this control.- Balanced Output:
Connects the Microtubes 900 preamplifier to balanced equipment (mic preamp, console, recorder, compressor, audio interface, etc.) via a standard XLR jack.- Footswitch:
The Footswitch allows you to remotely engage and disengage the Microtubes Engine. Hold the footswitch to Mute the amplifier. The VMT/B3K push button will remain operational with the Intelligent Footswitch plugged in.
- Use a regular mono instrument cable to connect the amplifier to the footswitch.
- Remove the cable from the footswitch jack in the rear panel if you want to control the amp from the front panel.
- The Microtubes 900 will only work with our proprietary Intelligent Footswitch (included with the amplifier). A generic Footswitch will not work with the Microtubes 900.- AC Socket:
Connects the power cord to the amplifier.- AC Power ON/OFF:
Turns the amplifier on or off.- Dimensions:
23.2x19x7.3 mm (9.13x7.48x2.87 in)
- Weight, Dimensions, and Manufacturer Part Numbers
Manufacturer Part Number (MPN):