Speaker jumpers

Whimpy?  I think the ones that came with my 804s look and work great.

I heard a definite difference when I replaced the stock jumpers on my Harbeths with Audience AU24 jumpers.  In my case, it cleaned up and defined the bass much better.  But in a different room or with a leaner amp, the stock jumpers may have worked better.  So the answer is - aftermarket jumpers may sound different, but are they better?   That's what listening is for.  It's got to be in your home with your system if you really want to get it right. 

Room treatments were probably the best upgrade I've made.Its just in this hobby it's hard to get away from more is better!

I have the B@W Martrix 800 I replaced all of the stock jumpers (3 sets per speaker)  with High Fidelity level 2 jumpers and improved the sound greatly. Before that i changed the stock jumpers for some older Transparent Ref. XL jumpers and only in the mid and tweeter did i get a small bump improvement. But with the High Fidelity level 2 jumpers it was a very good improvement across the board. Base was tighter mids and highs where much more detail, but relaxed sounding no hard edge.
Room treatments are a big plus too.
enjoy Pete

Yes with good jumpers, no doubt it will.As long it will match your system....