Floating point room correction DSP with analog balanced I/O (XLR Neutrik). Boxed in sturdy aluminum enclosure.
325 USD
Add a UMIK-1
  • Description
  • Specifications
  • Support
  • Application Notes
  • Reviews

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.

The OpenDRC-AN (AN for Analog) is a stereo audio processor with balanced analog audio input and outputs on Neutrik XLR connectors. The IR learning remote feature and/or rotary encoder allows for control of the active preset or master volume without the need of any PC once the unit configured. The unit can be used for stereo (Left&Right) room correction, as a subwoofer processor (Mono/Stereo to Dual Subs) or even as an active processor for biamp speakers.

Last but not least, the OpenDRC 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.
If you're looking for an all digital version, please check out the OpenDRC-DI here.


  • Analog Devices Sharc ADSP21369
  • 32bit Floating point processing
  • Stereo analog inputs (XLR Neutrik balanced connectors)
  • Stereo analog output (XLR Neutrik balanced connectors)
  • Front panel volume control
  • IR control with learning feature
  • Room correction with FIR filtering
  • Convolution engine for advanced/Custom filters
  • 2 way advanced filter engine
  • System equalization

Product downloads

What's in the box?

  • 1 x OpenDRC-AN boxed in metal enclosure
  • 1 x USB cable Type B
  • 1 x Universal 5VDC power supply with interchangeable plugs for UK/EU/US/AU
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

Balanced Analog Audio,  XLR connector

Audio Output Connectivity

Balanced Analog Audio,  XLR connector

Input / Output Max Levels

IN: 2 / 8 Vrms (jumper-selectable)
OUT: 2Vrms

Input Impendance
47 kΩ
Output Impedance 1.12 kΩ (560 Ω each signal pin)
Calibration Software OpenDRC plug-in
Filtering Technology FIR + IIR
DSP Presets Up to 4 presets 
Dimensions 41.5 x 214.5 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.


There are yet no reviews for this product.

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.