All digital floating point room correction DSP with SPDIF/AES-EBU/Toslink interface. Boxed in sturdy aluminum enclosure. Array
325 USD
IR remote
WI-DG wifi adaptor:
Add a measurement Microphone:
1/2 rack mount adaptor
  • Description
  • Specifications
  • Support
  • Application Notes
  • Reviews

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OpenDRC-DI : All digital floating point room correction DSP with SPDIF/AES-EBU/Toslink interface. Boxed in sturdy aluminum enclosure..
USD325.00 InStock Customer Support

Introducing the OpenDRC platform, a new range of digital audio processor with floating point capabilities for an Open Digital Room Correction (DRC) community. Powered by Analog Devices ADSP21369 Sharc DSP, the OpenDRC engine easily handles complex audio filtering processing such as room correction, FIR crossover filtering, reverb engines... Flexibility, high performance and low cost are the obvious hallmarks of the OpenDRC series.

As an all digital solution, the OpenDRC-DI (DI for Digital) carries the most common stereo digital audio formats (AES-EBU, SPDIF and Toslink) to match your existing equipment. Combined with an high quality Asynchronous Sample Rate Converter, the processor also easily adapts to any sample rate. The IR learning remote feature and/or rotary encoder will allow control of your source, active preset or master volume without the need of any PC once the unit configured.

Last but not least, the OpenDRC-DI follows the footstep of our proven miniDSP concept: "One hardware, many plug-ins". An easy to use platform that received praised for its simplicity of use. By setting some strategic partnership with 3rd party software developers, the OpenDRC takes it one step further. From advanced room correction to full featured linear phase crossover, miniDSP products provide an exciting range of audio processing solutions. A convolution engine without a PC in your system.


  • Room correction with FIR filtering
  • Convolution engine for advanced/Custom filters
  • 2 way advanced filter engine
  • System equalization

Product downloads

Control plugin (Included in purchase)

The download will automatically become available under your UserDownloads section once the product purchased. Please make sure to read the user manual for more details.

What's in the box?

  • 1 x OpenDRC-DI boxed in aluminum enclosure
  • 1 x USB cable Type B
  • 2 x Optical fiber cables
  • 1 Universal 5VDC power supply with interchangeable plugs for UK/EU/US/AU
  • Access to OPenDRC 2x2 plugin under UserDownloads section

Optional Accessories

  • UMIK-1, unique calibration file mircophone for accurate acoustic measurements
  • WI-DG for Wifi/Alexa voice control of your unit


Digital Signal Processor Engine Floating-point Analog Devices SHARC DSP

Internal Processing resolution
& Sample rate

32-bit - 48/96kHz depending on plugin

Input/Ouput Configuration

2 in / 2 out

Audio Input Connectivity

Stereo Digital Inputs: AES-EBU (XLR), SPDIF (RCA)
TOSLINK (optical)
Supported sample rate: 20~216Khz

Audio Output Connectivity

Stereo Digital Outputs: AES-EBU (XLR), SPDIF (RCA)
TOSLINK (optical)

Input / Output Max Levels


Input Impendance
Output Impedance -
Calibration Software OpenDRC plug-in
Filtering Technology FIR + IIR
DSP Presets Up to 4 presets 
Dimensions 52 x 180 x 200mm
Power External 5V supply
Impulse Response Correction
Infrared Remote Learning
Win/Mac Compatible
UMIK-1 Included
Bass Management
Room EQ Wizard Support

Applications notes on OpenDRC Series

Introducing the world of Digital Room Correction (DRC), a process where digital filters are used to correct speaker + room aberrations. A 3 step process yet an acoustical challenge where DSP & Math Gurus use all resources to solve this complex problem. The following lines will summarize the basics of room correction in a setup involving a PC/Mac with a measurement/filter generation software, a measurement microphone and an audio processor (OpenDRC).

AcourateDRC is the next generation of AcouratePRO software from Dr Ulrich Brüggemann. Designed with simplicity in mind, AcourateDRC exports filters who can be directly imported in the OpenDRC. 

rePhase is a Windows-based freeware program written by Thomas (aka "pos"), a long time miniDSP community member. rePhase generates finite impulse response (FIR) filters that "reverse" the phase shifts introduced by a loudspeaker crossover. rePhase can also generate linear-phase crossovers. With the aid of a real-time FIR filtering engine or "convolver" such as miniDSP's OpenDRC or miniSHARC, the result is a linear-phase loudspeaker system.

This tutorial will provide a walk-through of filter creation using Filter Hose to linearize a loudspeaker frequency and phase response. Data will be exported to MiniDSP OpenDRC.


Saturday, 02 August 2014

Après 5 jours d'utilisation, je suis très satisfait de l'opendrc-Di. Je l'utilise pour faire la correction de ma pièce quand je regarde la télévision ou un Blu-ray. Les filtres sont calculés grâce au logiciel Acourate. le résultat sonore correspond à mes attentes, voix et grave plus nette, disparition des résonances désagréables. Bref dans ma pièce à l'acoustique très moyenne l'apport positif du Opendrc est incontestable.

Malgré cela je ne met que 4 étoiles car il y a des défauts de finition. Par exemple, les clapets des prises optiques ne se referment pas.

La livraison est rapide.


It's an honour to see Pat Brown from Synaudcon ( using the OpenDRC + rephase + REW for a comprehensive review of the influence of FIR filters! His review is available on and goes through a real life scenario of the advantage/limitations of FIR along with speaker design. A must read!


For more info on Synaudcon and the great learning/training sessions, make sure to check out their website.