LOUDSPEAKER FILTER SPEC REAL-SOUND PROCESSOR RSP-AZ9EX REVIEW: No. 166 | February 2018, see HERESPEC Real-Sound Processor RSP-AZ9EX is a part of the High Fidelity reference system The SPEC loudspeaker filters are a unique addition to the top high-end audio systems. The laREVIEW version, RSP-AZ9EX, is much better than all previous ones of this company. This is a version that is even more resolving - it's the real resolution coming from better presentation of relations, from the richness of harmonics, from a better attack. The new SPEC filter sounds so organic, dense, beautiful. And even with warm sounding speakers it was a value, an amazing addition that brought out the beauty of this kind of sound. Highly recommended. WP.SPEC products are available and on demo at Absolute Phase
