Hi Milk, thanks for the reply and the excellent information. I think I may be going in a different direction; passive speakers with an amp/preamp combo or maybe in integrated amp. So, now I'm looking at the Kef Q300, Elac UB5, Wharfedale Diamond 225 and the Dali Zensor 3.
I'm trying to find a setup that gets as close to replicating the sound signature of my Beyer DT-990's as possible. Someone mentioned that the Dali's have a somewhat 'bright' sound signature, so I'm giving those a serious look. Unfortunately, there is nowhere around me that sell's these brands. There is a local dealer that sells Paradiagm and B & W so I may give the Paradigm Atom/mini monitors and the B & W 686 S2 a listen. Now I've got to get an integrated amp - thinking the Yamaha a-S801, or maybe the Rotel RA-1520. The Rotel will probably get nixed as it's quite expensive and probably overkill for what my use is.
As far as separates, I'm thinking Parasound or Emotiva, I have to research a bit more.
Thanks again for the advice.
Steve
Heya Steve, Unfortunately among those I only really know of the Q300 which are great but have a very forward and warm midrange which is quite a contrast to your 990s-the lower mids to bass is a little bloomy on the 300s which isn't as nice for more slam like EDM in the 990s as well as just general detail retrieval, and I hear most Wharfedales are also very warm and smooth. Dali I really don't know much about unfortunately but people seem to dig em.
You're definitely looking at some good integrateds, the Yamahas are very reliable and should be a good choice, also for a bit more of a modern piece, Marantz released its PM6006 which I hear they spruced up a bit or if you wanted more power or a DAC the PM7005 has a good DAC for a very all in 1 option. There are countless good integrateds I can recommend, but Marantz is one of the easiest as they have very generous current to power most anything but also look very nice and have some very impressive features/specs. You could always just pick up something even simpler depending on what you end up with, like if you need the juice maybe a new emotiva or good form factor/not too much power something like a NAD 3020 or Denon PmA50 or even a PS Sprout. It'll be easier to choose the amp when you've got the right speakers picked.
So as far as some very v-shaped, bright, fun speakers (990s) there's coincidentally the *Adam* A7X and A8X which have quite the scooped mids (especially the 8s) and just have tons of bass, though they aren't stupid bright as the ribbon on them is pretty sweet but they have some serious attenuation options on the back so there's always a chance you can adjust to your liking-but as for passives I almost don't think it'd hurt checking out the Monitor Audio Silver 1s, MAs house sound is definitely a bright and bassy sig. Also did you maybe have a budget in mind? That could make it easier to balance an optimal amp with optimal speakers, because if you can get the silver 2s that just more bass and with the Gold 50s you can have the sweet tweeter which takes a bit of the metal dome edge off, but still retains the MA sound signature. A lot of Dynaudios are also definitely bright and with the right model can provide the necessary bass. The X14s and 160s come to mind, the x14s are bright and have a very fun sound and more excitement(hence the name excite 14s, heh) the 160s I'm not sure if they're even making anymore but weren't quite as "wow-ing" but beat out the LS50 in some detail retrieval in the treble and definitely had more clean bass. Factoring in a sub is huge too. If you can't get one its no biggie but its nice to have the bass covered as much as you want while you just need to find good midrange-treble speakers (definition of LS50 pretty much lol)
I hope some of these suggestions are helpful. I'm more than happy to help you put your system together but it'll help to see what you're willing to pay/what you may particularly like (form factor, front ports, etc.) and then from there on matching an amp and DAC is pretty much easy as pie (example. X14s, PM7005, and if you're satisfied with the onboard DAC, then you're already set!
Sorry for long response, I'm just getting back from a speaker phase and just want to be of some use around here if I can!
-Sean