You have a very good cartridge. Possible upgrades include:
1) Change the JMW 9 arm for a JMW 10 3D. VPI will sell you a mounting board that attaches to your old JMW 9 plinth holes and is drilled for the 3D arm. Easy replacement/upgrade
2) Add a motor controller like the VPI SDS, Phoenix Eagle, or the Walker. I have owned both the Walker and the SDS and their performance is almost identical
3) If you have an older acrylic platter, you can replace it with the VPI Classic platter - very nice improvement in sound
Anyone of the above upgrades will sound like you have a new cartridge and will give you a higher level of performance. If you choose to do nothing, don't sweat it because you have a VERY nice front end set up.
1) Change the JMW 9 arm for a JMW 10 3D. VPI will sell you a mounting board that attaches to your old JMW 9 plinth holes and is drilled for the 3D arm. Easy replacement/upgrade
2) Add a motor controller like the VPI SDS, Phoenix Eagle, or the Walker. I have owned both the Walker and the SDS and their performance is almost identical
3) If you have an older acrylic platter, you can replace it with the VPI Classic platter - very nice improvement in sound
Anyone of the above upgrades will sound like you have a new cartridge and will give you a higher level of performance. If you choose to do nothing, don't sweat it because you have a VERY nice front end set up.