arron
Speakers will be Spatial audio Sapphire M3 open baffle.
Remote volume is a plus but not a must.
If I can not afford LTA Ultralinear int then I’m open to any amplifiers out there.
Raven nighthawk, Devialet 200, Dynaco ST70, Luxman 550s come to mind.
i have the m3 sapphires, have run these tremendous speakers with a wide variety of amps
key point of note is that the towering strength of the m3s’s is their amazingly full, natural, impactful bass imparted by clayton’s open baffle design... followed then by their excellent, open treble and full bodied dimensional midrange
that being said, these speakers have 4x 15 in woofers, presenting a load of 4 ohms in the bass region despite a seemingly quite efficient 93 db/w/m... thus they are actually quite a challenge for many tube amps (read, most lower powered, inexpensive ones) to deliver the current and damping factor (woofer control) needed to reproduce the truly wonderful bass response, the speakers’ key strength
as such, i recommend you get a high quality ss integrated amp with built in onboard dac, if you need to stay on a tight budget - imho it is the most cost effective path of excellent sound using these speakers
a lower powered current generation hegel (h95 or h120), or a small devialet (which i have - the 120 - which drives the m3s’s brilliantly), or a similar offering from ps audio or others...
https://www.overtureav.com/audio/integrated-amplifiers/hegel-integrated-amplifiers/hegel-h95/https://www.usaudiomart.com/details/649704107-devialet-expert-120/at $2000-2400 for hegel (new) or devialet (used) above, i promise you will have a hard time beating it with $4000-5000 of standalone dacs and tube amps... digital volume controlled dac or not :)
you have wisely chosen such truly outstanding speakers... but a tube amp on a budget is not the right answer to make them sing at their best
good luck, have fun