@carlsbad2 @jasonbourne71 is exactly right. Live music is extremely dynamic. Have you ever been 15 feet from a drum set? 85 dB is for apartment dwellers. Real men listen at 95dB and piss off their wives. Sabrinas will do this easily, but that amp will choke. @8th-note 1++ Even with Klipschhorns that amp is not enough. We use to bottom out Stereo 70's on K horns. Marantz Model 9s did the trick. Sounding OK and performing realistically are two separate issues. I do not want "sounding OK" I want the band in my media room. I want to close my eyes and FEEL like I am at a live performance. I is that feeling that makes people want to jump up and dance. "Working" is not good enough. People are entitled to have whatever goal they like with their systems. If listening to a table radio is their goal then a SET amp is perfect and so simple they could easily build one themselves. @ozzy62 is on the path to success.
@vonhelmholtz has a valid point. Speaker sensitivity is the volume a speaker reaches with a given power at 1 meter. Have you ever seen people listen to their system at 1 meter from the speakers? Volume drops off rapidly with distance especially with point source speakers. This is why larger rooms require bigger more powerful systems. SET amps are for closets and headphones