You should't have any problem with sensitivity. I was under impression you wanted to use as home speskers & sit approximately 6-9 foot away from RBH's. Sitting in nearfield overcomes a myriad of volume level problems. You should be able to easily tell when your amplifier is reaching power (wpc) limits and starts clipping when it starts to distort & bass no longer gets louder as you turn up volume (level) control. When you start hearing audible distress, back off the level control. Most people don't realize how loud 87dB is when your speakers are less than a meter away. See example impedance curves at http://www.stereophile.com archived speaker reviews.
Gunbei says he has no problem driving 86dB ProAc speakers despite 86dB sensitivity due to "mild impedance curve." My previous speakers were Spica TC-60s. Thier sensitivity is only 87dB with relatively flat in impedance curve. I had no problem driving with 8wpc tube amp. However, I rarely exceed 85dB, maximum. Just realize you don't have inexhaustible power & drive RBH's accordingly.
E-mail manufacturer for recommendations. They should know thier products better than anyone. Take advantage of thier expertise. Also, check out online reviews to see what amplifiers reviewers use & why.
About the only thing I would be concerned with since reading subsequent posts is crossover slope. 3rd & 4th order crossovers have tendancy to dissapate the first 4 or 5 watts as heat, not a good thing with low-powered tube amps where wpc are precious. Be sure to read Welborne Labs comments on "Some Insight into Proper Speaker Selection" at http://www.welbornelabs.com/recomendspeaks.htm (you have to scoll about 2/3 down page). It really is a good primer for plain talk about MINIMUM speaker sensitivity recommendations.
An inexpensive speaker tweak is to get an isolation cone or small piece of scrap wood to tilt your speakerss back so tweeter is aimed at ear level. Most speakers designed to be listened to on tweeter axis.
BTW, I can't speak with authority on Dared amplifiers since I've never heard but did notice several in AuduoGon auctions today. Sound like they could be what you're looking for.
Good luck.
Gunbei says he has no problem driving 86dB ProAc speakers despite 86dB sensitivity due to "mild impedance curve." My previous speakers were Spica TC-60s. Thier sensitivity is only 87dB with relatively flat in impedance curve. I had no problem driving with 8wpc tube amp. However, I rarely exceed 85dB, maximum. Just realize you don't have inexhaustible power & drive RBH's accordingly.
E-mail manufacturer for recommendations. They should know thier products better than anyone. Take advantage of thier expertise. Also, check out online reviews to see what amplifiers reviewers use & why.
About the only thing I would be concerned with since reading subsequent posts is crossover slope. 3rd & 4th order crossovers have tendancy to dissapate the first 4 or 5 watts as heat, not a good thing with low-powered tube amps where wpc are precious. Be sure to read Welborne Labs comments on "Some Insight into Proper Speaker Selection" at http://www.welbornelabs.com/recomendspeaks.htm (you have to scoll about 2/3 down page). It really is a good primer for plain talk about MINIMUM speaker sensitivity recommendations.
An inexpensive speaker tweak is to get an isolation cone or small piece of scrap wood to tilt your speakerss back so tweeter is aimed at ear level. Most speakers designed to be listened to on tweeter axis.
BTW, I can't speak with authority on Dared amplifiers since I've never heard but did notice several in AuduoGon auctions today. Sound like they could be what you're looking for.
Good luck.