Rives Audio PARC

I have 18 Gik acoustic devices and i do have a pro company building true bass absorbers. They work and you can set them at a specidfic frequency. But again, very large and very heavy. A PARC is small and i can use it with ease. Question is, what are the downsides?

I've been using the PARC for a few weeks now.
Next week i'll get a kit which calculate the rooms Q-value aswell as frequency response/ curve. I have been forced to revise the use of all my Gik devices. I also tried taking all of them out. Now i think it is spot on, taking a few panels out. I expect even better performance once measured and setting exact calibrations. Now it is very detailed, no flutter echo, no bloat, no colouration over overhang. It is precision and top notch PRAT. To hear music this way, is incredible. I did not expect this superb performance from my Barefoot MM27 speakers and Wadia 381.