how do I go about that? My system is in my signature, I guess my turntable is my weakest link, is that a better place to upgrade?
Let's start with the basics - is there anything you dislike about the sound of your system? Your current receiver should be plenty loud for almost all situations.
I seem to remember those old Pioneer PL series tables being pretty rock solid, and that HK receiver is pretty good, too. The *30 line from HK are all great, in my opinion. I've used phono inputs on the 430, 630 and 730 - all with fantastic results.
When it comes to vinyl playback, I always recommend starting at the source. So let's assume your vinyl is clean, your cartridge is properly aligned and your tone arm is setup properly.
Next, let's look at your stylus (which we'll also assume is cleaned regularly). If your playback isn't good from the start, no amount of amp or speaker upgrades are going to turn improper vinyl reproduction into audio gold.
How old/worn is your stylus? That might be a good place to start, as it's the first point of contact (literally) for your system. A cartridge upgrade can do wonders for soundstage, surface noise reduction, more balanced sound, frequency response, etc. when it comes to vinyl playback.
So when you DO eventually upgrade an amp or speaker, you'll truly be able to hear the benefits that they have to offer, as you're feeding them a good source to begin with.