![RealDiff HDR | Two Dimensional QRD Acoustic Diffuser, 1000Hz Cutoff Frequency | RealAcoustix, LLC | AV-iQ RealDiff HDR | Two Dimensional QRD Acoustic Diffuser, 1000Hz Cutoff Frequency | RealAcoustix, LLC | AV-iQ](https://cdn-images.av-iq.com/products/enlarge/RealDiff%20HDR.jpg)
RealDiff HDR | Two Dimensional QRD Acoustic Diffuser, 1000Hz Cutoff Frequency | RealAcoustix, LLC | AV-iQ
![2d QRD diffuser, acoustic panel solid wood for studios, KDP, home music rooms skyline _ - AliExpress Mobile 2d QRD diffuser, acoustic panel solid wood for studios, KDP, home music rooms skyline _ - AliExpress Mobile](https://ae01.alicdn.com/kf/A50429b8e3e9c43f08e332633cdaf0f51H/2d-QRD-diffuser-acoustic-panel-solid-wood-for-studios-KDP-home-music-rooms-skyline.jpg)
2d QRD diffuser, acoustic panel solid wood for studios, KDP, home music rooms skyline _ - AliExpress Mobile
![Amazon.com: Acoustic Diffuser - Wood Acoustic Diffusion Panel - Wooden Sound Panels For Echo Reduction And Sound Control (QRD-WELL) : Musical Instruments Amazon.com: Acoustic Diffuser - Wood Acoustic Diffusion Panel - Wooden Sound Panels For Echo Reduction And Sound Control (QRD-WELL) : Musical Instruments](https://m.media-amazon.com/images/I/511HVRiwjLL.jpg)
Amazon.com: Acoustic Diffuser - Wood Acoustic Diffusion Panel - Wooden Sound Panels For Echo Reduction And Sound Control (QRD-WELL) : Musical Instruments
![BXI Sound diffuser - 24 X 24 X 2.8 Inches Wood Acoustic Diffuser Panels Reduce Distinct Echo Preserve Room Liveliness - QRD Diffusor for Wall and Ceiling Acoustic Treatment (2D QRD) : BXI Sound diffuser - 24 X 24 X 2.8 Inches Wood Acoustic Diffuser Panels Reduce Distinct Echo Preserve Room Liveliness - QRD Diffusor for Wall and Ceiling Acoustic Treatment (2D QRD) :](https://m.media-amazon.com/images/I/81lHX9Myw8L._AC_UF1000,1000_QL80_.jpg)