I got my Janszen zA2.1 used for close to the requested price. They play loud and clean. Both the manual and REG at TheAbsoluteSound warn against turning the volume up too much because the usual cues for "playing too loud" (distortion) do not happen with these.
The standmounted version (Carmelitas): Peak SPL -- 105 dB (pair playing music at 4 m [13'] in mid-sized room -- 4.5 m x 7.3 m x 3.0 m (15' x 24' x 10')
Floorstanders: Peak SPL -- 108 dB (pair playing music at 4 m [13'] in mid-sized room -- 4.5 m x 7.3 m x 3.0 m (15' x 24' x 10')https://janszenaudio.com/pages/specs-valentina-p8
I measured them to be reasonably flat to 20Hz with REW in my room.
oh, btw, love Pine Tree Audio (mentioned earlier). Got gorgeous power cables and speaker cables from them. Speaker cables even got thumbs up from better-half. Both cables seemed to make a difference in terms of tightness of audio images. Since my previous cables where dumpster-diver brand, I'll take the perceived improvement