Like some others here, I think the speakers are the LAST thing to upgrade. And I wouldn't upgrade a preamp if I only had funds to upgrade one component. First thing to upgrade is your power amp; then your CD player. You should look into getting a CD player that can connect directly into your power amp so you can skip the preamp stage altogether. Really, the speakers are the last to consider. You won't believe how big a difference the power amp and even the interconnects and speaker cables will make in the same speakers. Your speakers are decent. Just my opinion!