What type of preamp do I use for an Electret stylus ?

Hello .
 my Dad gave me his old Dual 721 turntable .
It has a Micro accoustics 630 stylus which is 
Electret. Do I need to use a specific preamp ? Its hooked to a Harmon Kardon avr 300 amp .Could not find much info on this . 
Thanks in advance .