The Tom Evans Linear A is worth looking into. Jeff Day from 6moons loves his driving the DUO, so it should be equally at home on the UNO. My speakers aren't horns (they are 97dB dynamics) but the Linear A has knocked three other very fine amps out of the system (Canary CA-339, Wavelength Triton and a super-tweaked Audion Silver Night Mk II PX-25). My personal opinion is that it is a paradigm-busting amp.
The Linear A is a stereo amp rather than monoblocks, but at this quality level that really isn't much of a factor.
The Linear A is a stereo amp rather than monoblocks, but at this quality level that really isn't much of a factor.