

Stewart Audio DSP 4X4 - Compact DSP Processor and Matrix Mixer
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Description
The DSP 4×4 is a versatile full featured DSP ideal for small to medium installations where 4 channels are the right amount. With a full array of DSP blocks designed to accept line or mic level (selectable phantom power). The DSP4x4 is designed to optimize the sound quality of multiple zones.
Features:
- Configurable via DSP Control Center
- 4 inputs line/mic inputs with 24V phantom power
- 4 analog outputs
- 9 Filter block
- Matrix mixer with crossover points
- Compressor, limiter and delay blocks
- RS232 to recall 10 program presets
- 1/3 rack space
The DSP4x4 is the first standalone Digital Signal Processor that Stewart has ever produced. This compact DSP was design to address the multitude of problems encountered in typical installations impacting sound quality. Set and forget configuration is done through the front USB port via an intuitive windows program. This downloadable program makes setup fast and repeatable with the ability to save and copy programs to multiple units for labor savings. To help minimize setup errors, all DSP block values appear with a simple mouse over and mute or bypassed blocks are clearly tagged. The RS232 allows for preset programs to be used for applications like room combining and volume control from a wide range of devices. The inputs can be line or mic level with 24V phantom power available. Simple, versatile and powerful are all attributes of this compact DSP. You won't find a more flexible signal processor in a comparable package on the market today.
Frequency Response | 20Hz - 20kHz ± .2dB |
THD+N | 0.007% |
Signal-to-Noise Ratio | 120dB |
Unweighted Crosstalk | -95dB |
Input Sensitivity | -20dB to +3dB |
Input Impedance (Balanced/Unbalanced/Phantom) | 20k Ω, 10k Ω, 2.4k Ω |
Phantom Power | 24VDC @ 25ma Software Selectable |
D/A Conversion | 24-bit, 48kHz |
Current Draw | 400ma @ 5VDC |
Input Connectors | 3.5 Euro Block |
Output Connectors | 3.5 Euro Block |
LED Indicators | Power and Phantom Power |
Controls | USB (Programming), and RS-232 (Operation) |
Serial Control Port | Bidirectional RS-232 |
Baud Rate / Protocol | 9600 Baud, 8 data-bits, 1 stop-bit, no parity, no flow control |
USB Control Port | Front Panel female mini USB-B |
USB Standards | USB 2.0 Low Speed |
Program Control | Stewart Audio DSP Control Center |
Power Supply Input | External in-line 5VDC (included) |
Construction | Aluminum Chassis |
Mounting | Universal Bracket, Pole Mount Options |
Cooling | Convection-Cooling |
Dimensions ( H x W x D ) | 1.7” (4.3cm) H x 6.2” (15.7cm) W x 4.0” (10.3cm) D |
Weight | 0.6lbs (0.3kg) |
Safety | C |
Environmental | RoHS |
Warranty | 3 Years |
The DSP 4×4 is a versatile full featured DSP ideal for small to medium installations where 4 channels are the right amount. With a full array of DSP blocks designed to accept line or mic level (selectable phantom power). The DSP4x4 is designed to optimize the sound quality of multiple zones.
Features:
- Configurable via DSP Control Center
- 4 inputs line/mic inputs with 24V phantom power
- 4 analog outputs
- 9 Filter block
- Matrix mixer with crossover points
- Compressor, limiter and delay blocks
- RS232 to recall 10 program presets
- 1/3 rack space
The DSP4x4 is the first standalone Digital Signal Processor that Stewart has ever produced. This compact DSP was design to address the multitude of problems encountered in typical installations impacting sound quality. Set and forget configuration is done through the front USB port via an intuitive windows program. This downloadable program makes setup fast and repeatable with the ability to save and copy programs to multiple units for labor savings. To help minimize setup errors, all DSP block values appear with a simple mouse over and mute or bypassed blocks are clearly tagged. The RS232 allows for preset programs to be used for applications like room combining and volume control from a wide range of devices. The inputs can be line or mic level with 24V phantom power available. Simple, versatile and powerful are all attributes of this compact DSP. You won't find a more flexible signal processor in a comparable package on the market today.
Frequency Response | 20Hz - 20kHz ± .2dB |
THD+N | 0.007% |
Signal-to-Noise Ratio | 120dB |
Unweighted Crosstalk | -95dB |
Input Sensitivity | -20dB to +3dB |
Input Impedance (Balanced/Unbalanced/Phantom) | 20k Ω, 10k Ω, 2.4k Ω |
Phantom Power | 24VDC @ 25ma Software Selectable |
D/A Conversion | 24-bit, 48kHz |
Current Draw | 400ma @ 5VDC |
Input Connectors | 3.5 Euro Block |
Output Connectors | 3.5 Euro Block |
LED Indicators | Power and Phantom Power |
Controls | USB (Programming), and RS-232 (Operation) |
Serial Control Port | Bidirectional RS-232 |
Baud Rate / Protocol | 9600 Baud, 8 data-bits, 1 stop-bit, no parity, no flow control |
USB Control Port | Front Panel female mini USB-B |
USB Standards | USB 2.0 Low Speed |
Program Control | Stewart Audio DSP Control Center |
Power Supply Input | External in-line 5VDC (included) |
Construction | Aluminum Chassis |
Mounting | Universal Bracket, Pole Mount Options |
Cooling | Convection-Cooling |
Dimensions ( H x W x D ) | 1.7” (4.3cm) H x 6.2” (15.7cm) W x 4.0” (10.3cm) D |
Weight | 0.6lbs (0.3kg) |
Safety | C |
Environmental | RoHS |
Warranty | 3 Years |
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Your home for all things pro audio—backed by expertise and experience. Connect with us today.