Not to me they become invisible like the speakers have left the room, and the music just washes over you in a 3D sound stage, that you swear you can get up and walk into.
And I've built many, some very big ones over the last 30 years, even a self contained 120w-8ohm pure class-A water cooled one that could double down to 2ohm, that was two man lift, the size of a coffee table.
It must be a personal taste thing. While I can appreciate the Parasound stuff and the Halo have an incredibly clean midrange, they just do not have the high frequency extension that other amps do.