The latest addition to our range of products, the DSU500 fulfills a need in the marketplace for an extremely cost effective, reliable and simple to use audio player where short duration audio effects are required.
With a highly efficient class D amplifier capable of delivering 20W into 4 ohms and a line level output the DSU500 is the ideal product for a wide variety of installations.



Interactive kiosks
Triggered sound effects
Background sound effects
Point Of Sale
In-vehicle sound systems
Voice alarm systems
Intruder warning systems


Cost effective
Highly efficient 20w Class D amplifier
Compact unit with integral fixing points
Screw terminals for ease of installation
Line out for driving external amplifiers
4 direct access trip inputs
USB port for drag and drop data transfer
Power Supply included
On board memory
USB powered for programming



12-15V DC, 2A peak, 100mA standby


4 x active low inputs with programmable de-bounce


Individual NO or NC


Individual one shot options

Priority options

Non interuptible


Any other trip interrupt


Lower trip priority


Self interupt

Run output

1 x open drain, 500mA, 30VDC max

USB input

For loading audio and control files only

Audio format

Microsoft ADPCM (MONO)

Sample rates

48KHz, 44.1KHz, 32KHz, 16KHz, 8KHz


On board 8Mb flash

Storage time

8 minutes @ 32KHz, 16 minutes @ 16KHz

Number of audio files

Upto 5

Digital resolution

16 bit

Speaker output

Class D , push pull, 20W into 4 Ohms @12V supply

Line output


Volume control

On board screwdriver adjustable control

Dimension (WxDxH)

117mm x 75mm x 25mm


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