SM Pro Audio Q-Pre: 4 channel microphone preamp - Manual (Page 8)

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14. Q-Pre Main Features
Professional, multi-purpose multi-
channel pre-amplifier system for
studio applications.
• Four totally independent pre-amplifiers in half 19” rack package
• High quality audio
• 4 x balanced inputs
• 4 x unbalanced outputs
• Phantom On/Off per 2 channels
• 4 x peak Light indicators
• Individual gain control on each channel
15. INTRODUCTION
The market size for digital audio interfaces and computer based digital editing has
increased in a massive way. With systems available at very low prices, more and
more users are utilizing this technology. One of the main problems with many of
these systems is the input stage only consisting of unbalanced line inputs or very
low (or no mic pre) gain structure for the balanced input stage and the unavailability
of phantom power.
The Q-Pre comes to the rescue with 4 channels of balanced input, with a full range of
gain control from -20dB to +40dB and phantom power for every channel. This half rack
unit can now solve many of the connectivity issues which are raised in a large range of
situations, whether in the Studio, home, club installation or other live sound applications.
16. Q-PRE front panel
The Q-Pre has four independent pre-amplifiers channels. The unit provides variable
rotary gain controls, phantom power and peak indicator lights per channel.
16.1 The front panel rotary gain controls
Each channel features a rotary gain control for variable adjustment of the
desired pre-amplifier level.
16.2 Balanced input connectors
Balanced XLR signal inputs to connect microphones, line signals, etc.
17. Q-PRE Back panel
17.1 The Back panel phantom power switches
Each channel features a phantom power supply for enabling the
supply of 48v through the XLR input connector to power condenser
microphones. Each Switch controls 2 channlels.
17.2 Balanced output connectors
Balanced signal outputs to connect to a mixer, stage box, etc.