high quality peak limiter as new with operational and technical manual! the f601 superdynamic has been engineered to meet the challenge of the digital era." super dynamic in the studio: the limiter operates transparently and will act as a superb master programme limiter,controlling the fastest transients; or even modifying dynamic range is ideal for use at the input of a/d converters for pcm or cdr recording,when the peak level can be perfectly controlled. the superdynamic has become a broadcast standard particularly in the uk.