Speakers for Luxman LX-380

I'd imagine that the Heresy IV's listed with your system would sound good.

Though only 10 watts Coincident has an interesting single ended EL34 based integrated amp for approx. half the price of the Luxman (they sell direct).

DeKay

Oops. I was going to recommend Sonus Faber… but that am- has very little power. You’ll need a specialty speaker that sounds good with very low power..

Klipsch Forte IV

I have this fantastic amp and have the following speakers: Devore Super Nines, Harbeth 30.2XD, Dynaudio Heritage Specials and Magnapan LRS. The Maggie’s sound terrible with this amp but the other three sound great. I probably play the Super Nines and Heritage Specials the most in a rotation. My Luxman is currently in storage because I recently bought another amp and have too much  equipment. I’m considering selling it so if you are interested let me know. Mint condition.

First, that Luxman L380 is a gorgeous piece of equipment!  20W of tube power is enough to make excellent sound with a huge variety of reasonably efficient speakers.  Just avoid small ones that try to have deep bass…and adjust your volume expectations accordingly.  I have a Dynaco ST35 and it sounds great with IMF Super Compacts in a medium sized room (2000 cu.ft).