The Europa is anything but lean sounding. However, I know Roy says something (to get the most out of the speaker) like minimum 100-125 watts ss or 50-75 tube watts for pairing an amp with them. Despite this, many owners are using successfully much lower power amps with the Europas.
This power issue with the Europas has been discussed quite a bit here on A'gon so you might want to do a search.
Good Luck,
This power issue with the Europas has been discussed quite a bit here on A'gon so you might want to do a search.
Good Luck,