I use a pair of KEF LS50 is an un-ideal "IKEA bookshelf". It is my kid’s playroom. It sounds really good given the placement issues. They sound even better on stands in a smaller room. I have very high ceilings, so you need to consider room volume too. Your room maybe too big though.
Living Room System | Virtual Listening Room (audiogon.com)
These speakers are now 9 years old, and I still like them a lot. All the gear in the photo was sold in the last 2 days, except the speakers. I will be putting a $9.5K KRELL integrated amp on this tonight. The KEF’s sound better with good gear. I only sold the gear listed because I have the same amp upstairs and wanted to use the KRELL.
You do not need warm gear, like my KRELL, with the LS50s. I actually prefer neutral gear (like what I sold).
From my experience using a lot of amps on the LS50s, they could use about 100 watts @ 8 Ohms of power.
I was just thinking why does such a small speaker sound relatively good in my high-volume room. It must be the high ceilings, over 25 feet.