Hi Malcolm, I have had my X 5’s for ten months and love them. I burned them in with a Kenwood vintage SS amp for 200 plus hrs. Waited over seven months for a Torii Jr. v2 and it pairs great, couldn’t be more pleased. The X 5’s being a powered woofer and 97 db sensitivity will make most all Decware amps pair well. I’m in a 13 x24 room listening at 65 to 75 db levels most times but the Torii will blow you out at concert levels if you want. Hope this helps, best of luck making a decision.