The RealQuad studio is high-resolution quadratic residue diffuser designed for recording studios, control rooms and high-end home theaters. Sequence 13 one-dimensional quadratic residue diffuser is available in both 250Hz and 500Hz low-frequency cutoffs (actuals 1/2 octave lower). High frequency cutoff is <4500Hz (actuals in excess of 1/2 octave higher. Multiple woods, mixed woods and unfinished styles available. The RealQuad studio is high-resolution quadratic residue diffuser with excellent low and high frequency diffusion characteristics. It is designed for applications where critical listening is required.