Some regard the piano as a good reference for accuracy
I certainly regard the piano as a good reference for accuracy. I've been through quite a few sets of speakers in the last six months or so.
I'm certain that my dissatisfaction wasn't arising as a result of my source component or my amplifier.
It is undoubtedly the speakers that present the problems for me.
I guess this is why it really is of the utmost importance to go and audition the speakers one intends to buy, if not all your components. Luckily for me after much research, my source component, a CD player was excellent on my first attempt. Then I upgraded it to another higher grade, same make and that was even better.
I already knew what amplifier maker I like, so the upgrades I've made there have been highly satisfactory.
Unfortunately for me, I hate driving long distances and I'm a hermit. So it's been a trial, of trial and error with speakers.
I believe I'm there now though. Being quite new to understanding speakers and what makes for a speaker that will suit me has been a difficult process. Furthermore, I didn't realise until recently, that one really ought to pay an awful lot of attention to the choice of speaker, as this is going to have a huge impact on the quality of what you hear and your satisfaction and enjoyment of your audio system.