miniDSP DDRC-22D all digital room correction unit. Approx 2 years old and in excellent condition. Comes with UMIK-1 calibrated microphone, remote and I’ve just updated it to the latest Dirac Live v3 software. The difference this makes to the sound is huge with more precisely placed instruments and fantastic bass management. You can find more info here: https://www.minidsp.com/dirac-series/ddrc-22d and I’d encourage you to look at on-line reviews. You have to email miniDSP with the model and serial number and they transfer the Dirac license within 48 hours. Price includes shipping within UK.