DSP-4C
4-channel digital signal processor
£965.00
Incl. shipping and VAT
Shipping October/November 2026. Join the waiting list to hear when it's ready to order.
Engineered for sound
The CoLinear Acoustics DSP-4C is a state-of-the-art multi-channel digital signal processor and preamplifier, purpose-built for advanced room correction, multi-way active crossovers, and speaker/driver alignment in both frequency and time domains. Designed for audio professionals, system integrators, and discerning enthusiasts who require precise control over their acoustic environment.
The DSP-4C accepts stereo input signals and processes them through high-resolution algorithms to provide four independent output channels. Each channel offers comprehensive frequency response shaping, time domain correction, and gain management capabilities. The system is optimised for active speaker designs, room acoustic correction, and multi-driver integration where phase coherence and frequency response accuracy are critical.
Applications include development of active speaker systems, professional studio monitor optimisation, room correction in critical listening environments, and custom installation projects requiring precise acoustic control. The DSP-4C delivers the processing power and reference-grade performance necessary for the most demanding audio applications.
High-precision DSP engine
A 1GHz SHARC+ processor with inbuilt IIR and FIR accelerators delivers high-speed, low-latency digital signal processing. The internal DSP sampling rate can be set to either 96kHz or 192kHz, allowing up to 316 IIR biquads and over 53,000 combined FIR taps for detailed crossover design, correction, and time alignment across all channels.
Cross-platform control
DSPconfig, our intuitive control application, runs on Windows, macOS, and Linux. It offers a fast, visual interface with full access to all parameters, including comprehensive crossover and filter design, time alignment, gain structure, and output configuration.
Reference-grade DAC performance
Digital-to-analogue conversion is handled by dual 2-channel ES9039Q2M DACs with HyperStream IV architecture, which feed a carefully optimised analogue output stage. This combination yields class-leading results, with THD+N as low as -126 dB and dynamic range up to 130 dB (A-weighted). Each of the 4 output channels maintains exceptional linearity and low distortion across the entire frequency spectrum.
System integration
The DSP-4C offers user selectable calibrated full scale voltage output as well as independently configurable single-ended RCA or true balanced XLR outputs. This makes it highly versatile across different amplifiers and active speaker systems, whether in the studio, your hi-fi, or custom installs. Flexible input options include USB, S/PDIF coaxial, and optical connections supporting up to 24-bit / 192kHz resolution.
Full specifications will be published closer to launch.
- Input / output channels
- 2 / 4
- Total harmonic distortion + noiseTHD + N
- Up to -126 dB1 / 0.00005%, unweighted
- Dynamic rangeDNR
- 130 dB1, A-weighted
- Output impedanceZOUT
- 95 Ω (single-ended)190 Ω (balanced)95 Ω (unbal)190 Ω (bal)
- Full scale voltage outputFS VOUT
- 2.00 V to 2.50 V in 0.05 V steps (single-ended)4.00 V to 5.00 V in 0.10 V steps (balanced)2.00 – 2.50 V (0.05 V steps, unbalanced)4.00 – 5.00 V (0.10 V steps, balanced)
- Frequency responseFreq. resp.
- 20Hz – 20kHz +0.0 dB / -0.02 dB20Hz – 20kHz +0.0 dB / -0.02 dB
- Processing resolutionProcessing res.
- 32-bit floating point / up to 192kHz
- Processor
- 1 GHz 32-bit floating point SHARC+ architecture with inbuilt FIR and IIR accelerators
- Digital-to-analogue conversionDAC
- Dual 2-channel ES9039Q2M DACs with HyperStream IV architecture
- Inputsall at up to 24 bit / 192kHzInputs
- 1 x USB audio (UAC2)1 x S/PDIF coaxial1 x S/PDIF optical1 x USB audio (UAC2)1 x S/PDIF coaxial1 x S/PDIF opticalall at up to 24 bit / 192kHz
- Outputs
- 4 x RCA, single-ended4 x XLR, balanced1 x S/PDIF coaxial1 x S/PDIF optical4 x RCA, unbal.4 x XLR, bal.1 x S/PDIF coaxial1 x S/PDIF optical
- IIR filters
- Input channels: up to 60 biquads, combinedOutput channels: up to 256 biquads, combinedMax 64 per output channel316 biquads
- FIR filters
- at 96kHzInput channels: up to 16,384 taps, combinedOutput channels: up to 36,864 taps, combinedat 192kHzInput channels: up to 9,728 taps, combinedOutput channels: up to 18,432 taps, combinedat 96kHz53,248 tapsat 192kHz28,160 taps
- Software control
- DSPconfigWindows/macOS/LinuxDSPconfig
- DimensionsDims
- TBA
- Weight
- TBA
- AccessoriesIncluded
- 1 x infrared remote control1 x 22.5 W universal AC adapter1 x 2 m braided USB-A to USB-B cable1 x remote control1 x AC adapter1 x 1.5 m USB cable
- Compliance
- CE, UKCA, FCC Part 15 Class BConformity and disposalCE, UKCA, FCCDetails
Documentation
The DSP-4C's manuals and guides appear here as they are published.