I suggest not going with the AT33PTG for the AS309 arm as the arm is relatively high mass (>20 grams) and the AT33PTG is high compliance cartridge (40X10-6cm/dyne) giving you a resonance frequency of <6 Hz.
I know there's a few guys here with the same arm on their Ravens so hopefully they can chime in.
I know there's a few guys here with the same arm on their Ravens so hopefully they can chime in.