Input
Plug in your active or passive bass here. This is the first stage in the preamp. It converts any bass’s output into a steady, predictable low impedance signal. The input impedance is 1.0MegOhms.

Gain
This control increases the level to fully utilize the Mitre Box’s headroom. Turn it up until you hear distortion on loud notes, then back off a quarter turn.

Pre/Post button
This switch allows you to select the point in the preamp where the DI output gets it’s signal. Pre means immediately after the input stage and before the first “Gain” control. Post means the signal comes from the point after both the EQ stage and the FX loop.

DI Gain
This control sets the level of the signal coming out of the Direct Out on the back panel. When the DI is set to Pre-EQ this is the only control that affects the level of the DI. When the DI is set to Post EQ, the DI output level is obviously a function of the main gain plus any EQ levels AND the DI level control.

Tone Shaping

Treble
This control sets the amount of treble boost or cut.
Edge
This control sets the amount of upper midrange boost or cut.
Punch/Point button
This switch changes the frequency center of the Edge control. The “punch” position gives a great upper midrange bite for Neo-Jaco type sounds. The “Point” position offers great support to the upper treble frequencies when boosted, and is a nice slap contour when cut.
Midrange
This control sets the amount of warm, round lower midrange boost or cut.
Bass
This control sets the amount of Bass boost or cut.

Play/Mute Button
This button mutes the signal at the main output and the DI output. The headphone output remains on.

Master Volume
This control sets the output level. It controls only the MAIN output level. It never has any effect on the DI level regardless of Pre/Post setting.

Phones
This output has a mix of the post master volume control bass signal and the signal coming in the rear panel balanced stereo line input.

Click here to see a large photo of the Mitre Box Front Panel