Speakers for First Watt SIT-1 amp

david_ten,
Be glad to:
Preamp / Jeff Rowland Consonance
Phono Amp / Audio Alchemy PPA-1 with optional power supply
TT*  
Transport / Cambridge
DAC / Audio Alchemy DDP-1 (shares above stated power supply)
ExactPower SP15A (Transformer) 
REL Sub

*Details of analog system are posted in last nights (could be early morning) "Whats playing on your turntable tonight" thread (several posts)

glennewdick, I bet you’re right that if I move away from single-driver speakers I will miss them. I should find out more about how the other single-drivers compare to the Omegas. As almarg said, I should probably zero in on some with higher impedance.

The only way I really find my Omegas lacking is with instrument separation with busy music.  Should any of the other single-drivers help with that?

When I decided to change amps the SIT-1's (or new SIT-3) were on my short list. I, too, was hesitant to go with tube monoblocks as I have a small child and did not want to deal with the typical tube concerns (heat, short life, biasing, etc.). However, I got the chance to hear the Linear Tube Audio "Ultralinear" amp and was awestruck by the sound. Also, the amp is a unique design that promises extended tube life (10K hours+) and produce very little heat (much less that your class- A SIT-1s). You may not be interested in changing amps at this point but thought I would mention the LTA's, which are very special. I ran my Ultralinear with Daedalus speakers and the match is ideal. I've go new Daedalus Apollo's on order and am confident that this is going to be a great pairing. Next step is to add another Ultraliner and run them as monoblocks--should be fun.

Both Zu and Spatial make high efficiency high impedance speakers. I have a horn-loaded single driver speaker system as well and have heard a couple of mid-line Zu speakers and in both cases, almost regardless of the pairing amps - tube, SS, low or high watt, they all sound somewhat congested at higher volumes playing complex orchestral music content, As much as they excel in imaging while playing more intimate musical genres, they don't seem to be suited for rock and/or western orchestral classical music. Just my experience.

That's just the type of music I'm having issues with.  Has anyone heard single-driver speakers that don't sound congested with busy music?