Upgrade


Hello,
I own the below system and I am looking for an improvement by upgrading one of the components (budget $2000-3000).

-Graham Audio LS5/8 (large BBC studio monitor speakers)
-Analysis Plus Oval 9 speaker cables
-Mark Levinson ML 23.5 power amp (completely recapped by Madrigal technician)
-Audio Research LS 5 MKII preamp (restored and new tubes)
-VPI Prime turntable with -Dynavector 20x2 H cartridge
-Parasound JC3+ phonostage

Quite standard power cords and interconnects, no power conditioner.

What change would make a significant difference? Larger soundstage, more liquid, open sound without loosing the dynamic punch?

Thank you for your time and I would appreciate any ideas.
bms72
Those seem like really nice speakers but they bottom out at 40. [from website: 40Hz to 16kHz, ±3dB]

I have some speakers now that go down to 38 hz but the presence of just one REL sub does quite a lot, very noticeable, for the entire spectrum. I got that $1900 sub used for $900 and I am pretty convinced that a second sub is necessary. (Just waiting for a bit to see how some other things develop.)

Perhaps get a sub or two as a tryout and see what happens?
I agree with the other folks here who mentioned a sub.  I would look at adding a very refined, sealed sub.  JL or REL make outstanding subs.  

This will help deliver a bigger sound stage on a lot of tracks as you will improve accuracy and frequency response below 50hz.  

The other option would be to look at a nicer cartridge.  Especially with that JC3+, something like an Ortofon Cadenza Bronze could be interesting as it will add a bit of sweetness to the overall sound profile.  I run a tube phono stage and have all tube gear so I run the more detail oriented Cadenza Blue as the Bronze would just be too much.  

I am an Ortofon dealer. PM me if you are interested.  
Room, speaker positioning and consider subs. The gear looks competent to me.

+1.

Room--acoustic treatment, pull the speakers out further (soundstage), but then you lose some base (consider 2 subs).  As a fourth choice, some Triode Wire Labs Spirit Mk II interconnects.