Rogue Dragon VS PS Audio BHK VS Carver 350

Are your speakers efficient?

1. If inefficient speakers now, I would change the speakers to efficient ones I loved, then go tubes, both preamp and amp.

2nd, enough, but not too much power, it effects weight, placement options, amount of heat, and cost of course.

3rd. My order of preference: tubes; hybrid; SS

4. FEATURES. more about preamp, but hard to find in Integrated: I want remote volume and remote balance. I want MODE, stereo, mono, all left, all right.

Note: a lot of modern equipment have remotes but don't show or explain them, and perhaps desired features like balance buried in menus, I had to download and read owners manuals to figure ....

5. easy, safe, metered bias, or auto bias like Carver, others

After ~ 1.5 years I am still thrilled with the LSA Voyager GaN 350: MSRP $3000

I have a rotation of speakers.  Some more efficient than others.  Most of them are 4ohm nominal.  Adding Magnepan to the mix.  So I can expect 1-4 ohm.  My Arcam is good.  But,  If I bridge for power it it may not survive. 

The LSA looks very interesting!

Would be useful if you post photos of your system / space under your ID. Helpful in understanding your needs.