Dante Networked Audio

DSP-428 DSP Audio Processor


The DSP-428 is a powerful DSP audio processor with 4 analog inputs, 1 AES/EBU input (2-channel), 1 DANTE audio network input, 8 analog outputs, 10 PEQ bands per input and output and a frequency range up to 30kHz.

The front panel interface allows quick access to all control parameters by offering dedicated function buttons and the Data-Wheel.

For even faster set-ups and real-time monitoring of Input/Output routing, EQ, and Filter curves, full control by Mac or Windows PC application software via USB port and Ethernet port interface are provided.

The rugged analog input stage accepts input voltages of up to 10V RMS (+22dBu), with an excellent dynamic range of 118dB thus matching all of the professional audio sources.

With 64-bit digital processing and the high quality converters available on the market today, the DSP-428 offers sound quality which can compete with whatever your reference unit of choice is. 


The UNIKA DSP-428 utilizes state of the art DSP technologies, 24-bit 48kHz delta-sigma A/D and D/A converters with 128x oversampling. 64-bit Digital processing includes Gain, Parametric EQ, Shelving Filters, Time Delay, Crossover Functions, Compression, Limiting, and Matrix Routing. All inputs and outputs are precisely balanced  XLR connectors.


Front Panel Control: A backlit 2 x 20 character LCD displays channel and functions settings. Dedicated buttons provide access to all audio functions and system tools. The display indicates the current preset number then subsequently shows the selected input or output and its active control parameters. Five segment LED arrays on each input and output provide audio level information and mute status.

Unika DSPControl Software: The computer interface uses Unika DSPControl Software for Mac or Windows, which allows complete PC control of the unit through the USB or the Ethernet ports. Proprietary DSPControl software can be downloaded at no cost from current webpage. Advantages of using the software include greater preset capacity, and a very intuitive visual representation of the audio routing and control process.


Input Type 4 analog input, 1 AES/EBU input,
1 Dante audio network input.
Input Impedance 20K
Output Type 8 Analog Electronically Balanced outputs.
Output Impedance 100 Ohm
Dynamic range (inputs) 118dB
Dynamic range (outputs) 114dB
Nominal input level +6dBu
Maximum input level +22dBu
Nominal output level +6dBu
Maximum output level +12dBu
Digital processing 64 bits
Audio Sampling Rate 48KHz
96KHz AD/DA converter 24bits
THD @ 1KHz, +12dBu <0.01%
Frequency response 10Hz to 22kHz ±0.25dB.
Parametric filters per input and output 10
Parametric EQ filters can be set as Bell, High Shelf, Low Shelf, Notch, Band Pass, High Pass, Low Pass, AllPass
Parametric EQ filter Boots/Cut range ±12dB
Parametric EQ filters Q value adjustable 0.2 ~ 25
Parametric EQ filter frequency range adjustable 20Hz ~ 20KHz
Notch filters Q value adjustable 10 ~ 80.
Butterworth, Bessel, 
LinkwitzRiley crossover filters
24dB / Octave.
Delay per input / output 2000ms
Delay per output measured in 0.001ms/step, 0.343mm/step or 13.514mil/step.
Limiter & Compressor for each input and output:
Threshold range -48dBu ~ +24dBu
Ratio range 1.2:1 to Inf:1
Attack time range 1ms ~ 10sec.
Release time range 1ms ~ 10sec.
Compression Hold time 1ms ~ 10sec.
Makeup gain -12dB~ +12dB
Phase invert switchable for outputs 180°
Latency 640μs
Mute control on inputs / outputs
presets can be stored &
recalled on the unit and backup to the PC
Languages English. Spanish.
Universal Power Supply 100~240VAC, 50/60Hz, 20W max
Weight 2.5 Kg
Dimensions 145 x 483 x 44 mm