They sound great on speakers that don't need much more than 100-110W. They are rated for 150W into 8ohms but there is a lot of distortion after about 110W. My dad actually tried to run them for a while on his Mirage M3si's, but they are 83db sensitivity and there was no way to get the volume...
If I had the means, I'd put my old emotiva pre and power amps in new housing and add cosmetic tubes and transformers. I'd try to con a tube listener into auditioning it and can almost hear the buzzwords now. They'd love that "cheap low-fi" amplification more than anything.
Just remember everyone, tubes are magic and definitely not ancient and outdated. They not only amplify poorly, they trick you into spending ridiculous money for inferior performance and sound quality. But hey, at least you can get comfort in telling people how much it costs.
Anyone can like whatever bike/amp they want. But measureables are measureables. One bike will have better power to weight, acceleration, handling. But you can like something with different characteristics. Every thread devolves into "my opinion is better" however. Where people get screwy is that...
Some people can't accept their speakers can't play sounds like they want them to, so it has to be the amp/preamp/phono/DAC that has proven to deliver a clean signal. Nah it magic/$9999 cables/meteorite cable risers that do the trick.