The Project Studio RF or 'Baby Reflexion Filter' uses the same basic design as the Pro version, and while it can never be fully as effective as its more expensive big brother, it easily ouut performs copies and for project studio use is just the job. The metal frame is lined with the same patented polyester fibreboard as the Pro version uses for its outer layer. This material has extremely good acoustic absorbtion properties; much better than simple foam products. This is then further lined with a high density 'crystal' foam with curved undulations rather the cheaper and less effective ribbed, medium density foams that are widely used by other companies.
The result is a product which looks fantastic and 'sounds' even better when recording vocals and acoustic guitars... the Project Studio Reflexion Filter is not an Reflexion Filter Pro, or strictly a 'baby reflexion filter' as it is approximately the same size but it's the second best reflection filter portable vocal booth on the market.