As some of you may remember, I had a pair (two actually at different times) of Sonus Faber Venere 1.5's as well as a pair of Monitor Audio Silver 3i's, both of which were excellent sounding speakers. With that being said, I can honestly say they don't hold a candle to these Studio 530's. These 530's are just so much larger sounding, have a lot more dynamic swing capability, have a fuller mid-bass and midrange that's more controlled and textured, the treble is well defined and extended, and completely smooth and organic sounding in my system and room. These speakers throw out a rather wide and deep sound stage with a rock solid center image that's very much life-like in size and body.
I was very skeptical swapping out my hybrid open baffle GR Research X-Statik's for these, especially considering I spent double what these 530's costs on crossover upgrades and No-Rez dampening material alone for the X-Statik's.
And speaking of crossover upgrades, my brother purchased these 530's slightly used from the original owner who pulled out the crossovers and upgraded all of the stock capacitors and sand-cast resistors with Jantzen Audio capacitors and resistors. That could be a very good reason why these Studio 530's sound so darn good in my system.
I am highly impressed with these speakers so far, and I've only had them up and running in my system since yesterday evening, playing a wide variety of music. So far, they aren't holding back at all on surprises from either very familiar recordings or new recordings that I've never heard before. Either way, I think I'm going to keep these speakers in my system for as long as my brother will let me. I don't think that will be much of an issue however since he replaced these JBL's with a pair of Revel bookshelf speakers that he absolutely loves. Personally, I think these sound better.
P.S. - These JBL Studio 530's are being fed 80 watts from my monoblock Schiit Aegir amps. They have absolutely no problems getting these speakers up to decent volume levels, and they blend beautifully with my Polk subs. The 530's are connected via some Maze Audio Ref 4 bi-wire speaker cables... Also very impressive. And as you can see in the pics below, I have them about 4 feet out into the room.
Again... Highly impressed here. Highly impressed.
(Please forgive the mess in the room. I kind of smashed my right big toe at work the other day and have been off my feet. And yes, it's extremely painful and I will lose the nail.) I have pics if you like. LOL

No, I'm not going to post those. Too disgusting.
Anywho...