opinion on Omega Super 3i speakers

You will need sub for the 3i to really appreciate them.omegas like tubes

Which is why I use 2 subs (crossed at 80 Hz). Funny, when I take the subs out of the equation it always surprises me to hear just how much bass those little 4.5" drivers can produce. Could I live with the Super 3i's without the subs? Yes, I think so. There is a lot to like when paired with the right amp. I already had the subs when I purchased the Omega's so I didn't have to think much about the bottom end. Not sure I would have bothered adding a sub or 2 if that wasn't the case. Of course, my nervosa would have likely kicked in at some point and .. 

Wtf I played them without sub too, they are very versatile speakers, I enjoyed them.

To all Omega users-   can  you say that sound is full body or piano
test is no  good >usally to add sub is not help this issue, or the 
punch bass is very weak ?

I have been auditioning various single driver, high efficiency speakers since I decision to return to SET amplification.  I have listened to both the Omega Super 3i (5" driver) and Compact Alnico (6.5" driver) and I will say that they sound quite different.  The larger driver is certainly more impactful and powerful sounding and has a stunning midrange, but it is less articulate when playing complex music.  The RS3 driver is, IMO, much better suited to full range music.  I suspect that the limitations of the larger driver due to added weight and the wizzer cone, which acts as a limiter or brake on the driver.

I have heard the Super 3 HO at someone else's home and would like to hear the Super Alnico HO monitors.  But if I were going to order a new pair now it would probably be the Super 3 HOs.  They work best overall for the wide range of music I listen to.