Will a 75x2 tube amp drive BW 804D?

I at one time used a pair of Infinity RSIIa in an 11' by 12' room and loved them.
So the room size is not gonna be taht big a deal if that is all you got.
I owned 805s and found they needed a sub even though i hate strong bass sound.
So I can understand the desire for the 804D. (also the 805D is like $5 grand!) So go for the 804D and yes your amp will play fine IF you do not want earsplitting sound levels, AND you do not crank up the music to get gut massaging bass.
I bet you will love the combo.
Good luck!

I listen to N803 spreakers with a BAT vk55se. My room is about 13x20 ft. I keep the decibles between 70-75. No problem driving the speakers.

I guess you'll miss quite a bit of definition and detail on this combo, cuz in order to hear something in 40hz ballpark you'll need at least 200wpc. Using tube preamp can partially leverage your aim for the tube sound.

I have to disagree w Marakanetz. Check out member Dougdeacon's system. He is driving 803Ds w a 60 wpc tube amp (2 el-34s per channel). The 804Ds are rated at the same 90dB efficiency as your 804Ds, in a smallish living room, maybe 14 x 16 or so. I've heard his system several times and I can tell you that the amp is more than capable of driving those speakers very, very well. I have the same amp and it does quite well w 89 db Merlins in a 14 x 23' room. Whether your amp and upstream components will deliver the undistorted signal that the 8XXd's demand is another question. If you have any HF nasties coming thru, they will reveal them ruthlessly. But as far as power goes, that should not be a problem. IMO, YMMV, etc, etc.