Well, I have a 1950’s era tube amp powering my stereo system in my living room right now that was bought by my grandparents for a very modest amount and I can tell you that it sounds 100 times better than an iPod played through a cheap pair of headphones.
I have my Dad’s and my own youthful Dynakit Stereo70 amps. They work well (after some capacitor upgrade/replacements) but at 190W each are room heaters.