Tube Friendly Speakers

Coincident Speaker Technology,Audio Note, Lowther and Soliliqy all come to mind. I'm sure there are many others but these are all names that come up for sale quite often so if you don't like them they should be fairly easy to move. Hope this helps.

These may not be as esoteric as some would like but I think KEF reference series are "just right" for tubes. I'm using the Ref-III.2 with my ARC VT-100 and am extremely satisfied. The Ref series is fairly high output, 90 db give or take, and has a purposely flattened impedence (which glow-bottles love!). Ref-IIs can be had for around $2200 online.

i'm a big fan of Spendors when match with tubes, but not so much the newer line. look for a used pair of 7/1's, 1/2's or 2/3's - you'll be amazed!

Some Silverline products could be on your list

Find a used pair of B&W P Series. P4, P5, or P6. P5 probably the best. I know of people using them with great results with the Decware Zen(??) amp that is less than 10 watts I believe.