Very handsome room with nicely complimenting equipment cabinet and Altecs. The size of your listening space should really lets the Altecs breath allowing the sound to develop. Shindo seems popular w/ Altecs. There must be real synergy there.
I too use Altecs w/ tubes though a step down (AES Superamp MkII > Model 15's) in a small room. Still impressive but they act like near field monitors so I am missing that huge soundstage you have. I love your system.
