The Arcam AVR21 AV Reciever includes Dirac Live room correction and can be upgraded with Bass Control. See what's included and how to upgrade.

The Arcam AVR20 includes Dirac Live Room Correction, so no additional Room Correction license is needed. Dirac Live measures how your speakers sound in your room and corrects frequency response, timing and phase to improve clarity and soundstage. You can also adjust the tonal balance to suit your preferences.

Dirac Live Bass Control is available as a paid upgrade for the Arcam AVR21. It automatically adjusts your subwoofer or subwoofers to work together with your main speakers, aligning their output around the crossover for a smoother transition and more even bass across different listening positions. Bass Control builds on the Dirac Live Room Correction already included with the receiver.
The Arcam AVR21 supports Room Correction and the optional Bass Control upgrade.

Dirac Live Active Room Treatment (ART) is not available for this model.