AT 33 Mono "45 Anniversary" with an 25mµ tip. There is nothing left in Sound. You can hear details you never know that they exist. Exactly what I like.
Beautiful sounding cartridge with extended highs and excellent detail, rich solid bass and a very neutral mid-band.
The LP surface noise goes down significantly. The highs coalesce and sound more defined and extended. Instruments are easier to pick out in a band or orchestra. The bass acquires greater definition. There is actually a semblance of a stereo effect, too, probably because the brain picks up cues from the sound pressure and phase differences picked up by the microphone. Simply a GREAT performer ;)