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DPA-1

Audio Pre-Amplifier

Floating balanced audio input and output

Up to 70dB gain

12-24v DC power supply

Frame Ground for safety earth

LED power indicator

Removable terminal block connectors for wiring

Compact clip-on DIN rail module

The XTEC DPA-1 is an audio pre-amplifier, intended for professional applications where microphones or other low level audio sources need to be amplified before connecting to line-level inputs.

 

It features an ultra-low noise balanced audio input, with gain adjustable from up to 70dB. The balanced output is designed for driving long cable runs into 600Ω loads.

 

Audio signals are floating unless externally tied to a ground. This mimics the characteristics of transformer type inputs / outputs. Unballenced wiring may also be used if required. 

 

The unit can be powered from 12 to 24v DC, and uses a linear voltage regulator with excellent supply noise rejection.

 

The DPA-1 is designed to be clipped on to standard 35mm DIN, and uses removable terminal blocks for all wiring. All terminals are protected against ESD and voltage spikes.

 

Note the DPA-1 does not provide phantom power.

Plug-in screw terminal connectors, to save time and prevent wiring errors if changing a module. Clamping terminals accept up to 16AWG conductors.

Gain is adjusted via a 10 position screwdrlver operated switch. This allows for precise gain setting, even when replacing a unit. 

Balanced audio in and out isolated from ground.

 

The FG terminals are commoned, but isolated from audio. They can be used for shield and safety.

Use a good quality 12-24v DC supply for lowest noise.

 

FG terminal for audio shield safety ground.