Integrated Amplifier Recommendations Needed

@samdance I tend not to recommend anything I haven't owned & enjoyed and/or been very impressed with in serious seat-time in auditions.  That being said, there is definitely a synergy or compatibility that needs to be considered when it comes to selecting major playmates like an amp & speakers.  As such, I would definitely recommend auditioning whatever amp(s) interest you with your speakers before making a final decision.  Here are some ideas for you to ponder:  Musical Fidelity M6si + McIntosh MA5200 or anything McIntosh+ Simaudio Moon Neo 340 IX + Luxman + expertly refurbished Sansui + Yamaha.

F.Y.I.  From "The Vintage Speaker":  "The L112´s performance depends heavily on the correct positioning and elevation of the speakers in consideration to the room size."

JBL L112 Century II Speaker Review, Specs and Price - the Vintage Speaker Review

Good Luck & Happy Hunting!

If you are willing to stretch a little, the Belles Aria Signature is more powerful and terrific (I own one and previously had the basic Aria). I also own the Gato Amp 150, which is their top model and sensational. The Amp 150 is Class AB and does not have a DAC, while the less expensive 250 and 400 while having higher power ratings are Class D and have an internal DAC...

I owned a pair of L112’s back when they were first released. A really, really good speaker and I wish I’d kept them. I used a Mac 2120 amp with a Crown 150A preamp. This gear was taken around to all kinds of venues and played loud with reggae being a favorite and we would amp guitars with the setup as well. Given my fond memories of the L112 and the 4312 and 15 originals from back in the day, and based on your listening, perhaps a Leben CS-600 would work or go with a Mac SS integrated. The Leben will give you more satisfaction unless you need volume and robustness. BTW - I replaced the Crown pre with a wonderful PS Audio pre driving the 2120 and that was way better sounding but less functional.

The hegel and parasound suggestions are spot on.  I'd also consider the Michi X3.