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PREAMPLIFIER OPERATION
8.1 Turning the power ON
The power switch is located on the MP-800 rear panel.Turn on the power switch.
8.2 Setting the gain
First, turn the gain control fully counter-clockwise and check that the 48V phantom power is off.
Connect a microphone and then turn on the phantom power if required.
Simply increase the Gain Mic/Line until the optimum level is reached with the output level in 5.
If the peak indicator flashes red excessively with the gain control in the fully
counterclockwise position or engage the -20dB attenuator.
8.2 Using the MP-800 as a DI-BOX
The 1/4" jack combo connector on the rear panel is used as vacuum tube direct box.
This input has an impedance of 1M ohms and can accommodate a wide variety of high
impedance input sources, including bass guitar, keyboards, electric guitars, piezo
transducers etc.
In this mode, the GAIN Mic/Line that controls the gain of the
discrete input
stage
,the -20 dB Pad, the Phantom power and the input line meter are not available.
The HPF,phase reverse switch,the level output, are active.
8
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