Key Features Our RIAA playback equalisation is accurate to within a +/-0.15dB tolerance from 20Hz to 20kHz, ensuring true and accurate playback of your favourite records. While most subsonic filters remove bass as they filter rumble from record warp, our Intelligent Subsonic Filter accommodates for the design of vinyl records to remove the warp and retain the bass. With support for MM and MC cartridge types, compatibility is guaranteed, and your phono stage can keep delivering amazing results even if your setup changes. An ultra-low EIN (Equivalent Input Noise) of -151dBV,the audible noise floor found in many phono stages is removed, and greater detail in the music is revealed.