Acoustic resonators in place of room treatment

Attended Frank of Acoustic resonators demo during Kuala lumpur AV show , Malaysia yesterday. Demostrated his magic show and I can really hear the difference . During Q & A session someone asked him whether it is necessary to do room treatment if we use the acoustic resonators. Was told it's sufficient to use only the resonators up to max 11 pieces only. I got my room treated using Rives level1 ( only level possible in Malaysia) & faced with construction issues & it's only theoretical design only. If it's truly work , it's certainly preferably over traditional room
treatment. Cost wise it's comparable . Anybody has tried the resonator method of room treatment & what is your impression?