RCS 2.2 XP Dynamic Room Correction - DRC ™ in the RCS 2.2 XP
Developed by TacT, DRC™ is the next generation of room correction technology. This new Tact proprietary technology allows for target curve adjustments and instant correction filter programming, thereby facilitating immediate listening to room correction changes. All room correction filter calculations, all processing of measurement data, and all target curve management is implemented in the RCS 2.2 XP internal processing unit. A computer connection is used only to provide the user with a graphics interface and plays no other role during the measurement and correction processes whatsoever.
Read about Dynamic Room Correction 
To perform dynamic room correction, the Tact – 2.2 XP employs 8 dynamic target curves in conjunction with the reference target curve used in previous versions. The additional target curves are used to measure how your perception of music changes with different levels. The system then exptrapolates this data to dynamically reclabirate the entire system for every 0.1 dB level change. Room measurement data is filed into RCS 2.2 XP internal memory, allowing for on-the-fly target curve adjustments.