Buyers should prioritize the NRC (Noise Reduction Coefficient) rating, which typically ranges from 0.7 to 0.95 for high-quality panels. Ensure the base material is High-Density Fiberboard (HDF) or Medium-Density Fiberboard (MDF) for structural stability. For the surface, verify the quality of the natural wood veneer or melamine finish to ensure scratch resistance and aesthetic consistency. Additionally, check the perforation or groove patterns, as the spacing (e.g., 128/2 or 132/2) directly impacts sound absorption frequencies.