The ADC RPSX-30 RPSX30 stylus for the ADC SER-IV SERIV
cartridge features a highly polished nude special
elliptical diamond with 0.3 x 0.7 mil scanning and tracing radii bonded to an
aluminum tapered tube cantilever for superb tracking and tracing of
record grooves. It results in very fine detail and
harmonically exquisite sound quality.