All digital Dirac Live® correction DSP with SPDIF/AES-EBU/Toslink interface. Boxed in sturdy metal enclosure.
799 USD
Add a measurement Microphone:
Add a Microphone Tripod:
IR remote
1/2 rack mount adaptor
  • Description
  • Specifications
  • Support
  • Application Notes
  • Reviews

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DDRC-22D : All digital Dirac Live® correction DSP with SPDIF/AES-EBU/Toslink interface. Boxed in sturdy metal enclosure..
USD799.00 InStock Customer Support
Dirac Series

The Dirac Series of 24/96 high-resolution audio processors with Dirac Live® are designed to fit into an existing system with minimum disruption, yet with the flexibility to allow for new and more cost-effective system configurations. The DDRC-22D interfaces via digital signals — AES-EBU on balanced XLR; coax/SPDIF on RCA, and optical/TOSLINK. The digital input source can be selected via the front panel or remote control, and all digital outputs are simultaneously active. The DDRC-22D can be simply inserted into the digital signal path of an existing system, or the on-board volume control used to simplify system configuration. Examples:

  • Between one or more digital sources and a DAC
  • Between one or more digital sources and active loudspeakers with digital input
  • Anywhere in the digital signal chain


  • Processor: 32-bit floating-point Analog Devices SHARC DSP
  • Dirac V3.0 Compatible
  • Input/output resolution: 24 bits
  • Maximum input sample rate: 216 kHz
  • Internal operating sample rate: 96 kHz
  • Output sample rate: 96 kHz
  • Supports for Dirac Live 3.x
Digital connections to the miniDSP Dirac Series DDRC-22D

Product Downloads

What's in the box?

  • Dirac Series 24/96 high-resolution audio processor — DDRC-22D
  • Universal 5 VDC power supply with interchangeable plugs (UK/EU/US/AU)
  • License for Dirac Live Calibration Tool Stereo for miniDSP (Win/Mac)
  • USB cables for Dirac Series audio processor and UMIK-1
  • UMIK-1 calibrated measurement microphone (Option)
  • Microphone tripod stand (Option)

NOTE: The UMIK-1/2 are measurement microphones approved by Dirac Research. Knowing the major effect a wrong calibration/measurement would have on the final results of Dirac Live tuning, we strongly recommend that you select a UMIK-1/2 microphone together with your platform for a plug&play experience leading to best results. Any issues related to 3rd party microphones such as ASIO/USB audio driver incompatibility/Latency problems or incorrect calibration process will not be under our support structure by our support team. 



Digital Signal Processor Engine Floating-point Analog Devices SHARC DSP

Internal Processing resolution
& Sample rate

32-bit / 96kHz

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 Dirac Live® for miniDSP
Filtering Technology Dirac Live®
DSP Presets Up to 4 presets 
Dimensions 41.5 x 214.5 x 200mm
Power 5VDC single supply / 600mA @ 5V
2.1 round plug

Application notes on DDRC-22D

The Dirac Series of high-resolution audio processors from miniDSP incorporating Dirac Live® are an advanced hardware/software solution for digital room correction (DRC). In this application note, we'll give a quick run-down on how to use one. We'll assume that you've already obtained your Dirac Live software license and installed the Dirac Live Calibration tool for miniDSP software.

ddrc 22d dirac 400


Thursday, 23 February 2017
I ordered the DDRC-22D for use with my NAD M2 amplifier and PSB Synchr the sound suddenly becomes choppy and harsh, but once switched back on I end up with a sound that is tight, refined and very listenable. Well worth the asking price and certainly as essential addition to any high end audio system. My system: Bluesound Node 2 > NAD M2 > Loop Out > DDRC-22D > Loop In > NAD M2 > PSB Synchrony One Towers
Monday, 08 December 2014
Unbelievable! This unit is the proverbial swiss army knife for home audio. It is the single biggest improvement in audio quality and delivery than any other component upgrade I've ever done. Enthusiastically recommended!
Matthew Yearling
Saturday, 24 May 2014
In a very acoustically challenging room with tiled floor, asymmetric layout and unequal speaker distances, the end result after a bit of tweaking the frequency window is simply amazing / stunning

Improvement in soundstage, focus of voices and instruments, timbre improvement, bass evenness and strength. I am no longer lusting for a sub, but will probably try one out out of curiosity

Qobuz>Sonos>Toslink>DDRC-22D>NAD D3020>KEF LS50
Edward Hsu
More reviews

The HomeTheaterShack community and the great team behind it goes at great length to review products. Reading from the lengthy but well written technical reviews from Wayne Myers, we can only guess that it too a lot of time and energy to fully evaluate the product.


DDRC-22D review (Jul 2014)

I can enthusiastically recommend the miniDSP DDRC-22D as a truly Pro-Level DRC offering

Wayne Myers from HomeTheaterShack