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Black Box HG-2 User Manual page 6

Vacuum tube microphone preamplifier / d.i. analog design
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CONTROLS
1
2
3
3 way power switch with Off/Standby/On positions: Standby mode sends
1
power to the tube heaters and LEDs
Input impedance selector: Impedance is switched by tapping into the
2
transformer at different points in the winding
3
48 volt Phantom power fed by an isolated, regulated, linear supply
4
Phase switch
5
5 position, low end roll-off selector
6
Pentode gain control
Pentode "Tone / Boost"
7
8
Triode "Tone / Boost"
9
VU output meter: calibrated to -18
Triode gain control
10
11
Mic / D.I. Switch
12
Instrument input
13
Passive output attenuation
2
WHAT DOES THIS BUTTON DO?
5
7
6
4
9
8
10
A N A LO G D E S I G N
11
13
12

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