Based on the same absorption principles as the , the AVAA C214 is fully digital and allows control via an app.
Please note that it is NOT A PHASE CANCELLATION device.
The AVAA is pressure based absorber.
Whether you have 1 or multiple disturbing room modes, the AVAA C214 will absorb all of these that are present in its location.
Simply place it where your room modes are and it will absorb them. No calibration required.