I know it has been some time since your post but I just found it and would like to provide you my experience with Levinson. Skipping all the amps I have used in the past, McIntosh, Krell and Levinson amps are still with me. I used to have a McIntosh MC2205 as my main amp for my living room system's front speakers (Legacy Focus). Once I located my Levinson, it found its home on my main speakers and the McIntosh has become the amp for my bedroom system (which only gets used to sleep and at very low volumes).
The Legacy Focus loudspeakrs are very efficient so the Levinson has obviously no problem with them at all. Before the Focus, I had Infinity Kappa 8 (original series). These speakers let you know if things were to bright with their Emit K ribbons but the low impedance required the amp to really work. The Levinson again had no problem handling the low impedance and took complete control of the speaker system. Regarding sound quality, the Levinson amps probably one of the smoothest sounding solid state I have heard. It is very transparent, spacious and linearly flat at all listening levels.
Moving back to the Focus as the listening speaker - I listen to music including classic rock, disco, hip hop, jazz, and easy listening sound quality recordings. I listen at many different levels. The Levinson makes the Focus fill the rooms with sound at very low levels in which you can easily follow any instrument without loosing focus. It has the energy to produce low frequency bass at very low levels at the right level compared to the mids and highs. When I turn it up, the Levinson doesn't even budge. As loud as I can take it, the sound appears crystal clear and more importantly, linear. Again, any instrument you choose to focus on is clear and reproduced at the right volume compared to other frequencies. The McIntosh has a more brighter sound at high volumes much like a Bryston. The Levinson provides the same audio experience at any listening level. I really do not know how loud it can play and continue to produce sound as I am describing because at the levels I stop, there is no sign of distortion even when the most dynamic passages scare the ---- out of me!
As for integration - I use the Levinson to power my main speakers and I have a Krell 3-channel to power a center and rear surrounds when I use the system for home theater. The Krell appears to blend more naturally with the Levinson than the McIntosh amps I have tried.
I have no idea how the Levinson would sound on a dynamic set of horns but it allowed me to easily get lost in music on Infinity Kappa 8 and Legacy Focus loudspeaker systems.
