My main reason for monoblocks ($4000 each) is to improve midrange and bottom end from a small speaker. Single MC275 amp was used as my formative evaluation of speakers. But the audio dealer later inserted monoblocks (tubes of course) and the system presented a different flavor of dynamics and soundstage which I preferred over single stereo amp. And those mono amps were 22 watts.
In addition, if you notice in "My Office" I also use shorter ICs and speaker cable which help reduce the cost significantly.
In addition, if you notice in "My Office" I also use shorter ICs and speaker cable which help reduce the cost significantly.