I would say other then clean records your next step may be a better cart, the AT isn't bad for a starter cart (sub $100) but moving up to a better fixed styli's cart will open up your musical enjoyment, also try to find a tip profile that like a mico line, shibata etc will give you more detail but ellipticals are not bad either. there is some very good AT carts that wont hurt your budget if your enjoying the AT sound. Then of course there is a huge amount of good carts for the budget minded audiophile. I'd look in the $150-$500 range as there is some very good MM carts in there that will be a huge step up from your cart. if you have a MC stage maybe an entry level MC cart but min there would be something like the Denon DL 301 at $250 new. I'd probably stick with MM for now until / unless you wanted to try a high output MC as I believe your pre has some loading selections not 100% sure there though.
thinking MM carts like the Otofon blue's, red's and bronzs. AT OC 9's very good cart for the money. there are so many I'd go on a site like needledoctor and take a look and then google search for reviews.