Newbie Can't Decide Which Tube Amp

Ok, sorry to butt in, since this post is written primarily to address the comments about needing “this or that” number of watts of power for the OP’s 87/88 dB speakers, but I just want to share my personal experience, and remind everyone (because honestly, most here already know this) that many factors determine what amp will drive which speakers. I’m currently using a +/- 100wpc tube amp to drive Maggie 1.7i speakers. I’ve tried many amps, of various types and power ratings, hooked up to these (and many other) speakers. In my room, with my music, at my ‘normal’ listening level, it sounds fantastic. As long as I don’t try to blast my windows out (which I don’t) I’m completely satisfied with this combination. I read carefully every time Ralph (atmasphere) posts because he not only shares his wealth of knowledge in a very even-tempered way, but also I find what he says to be very well-thought-out. However, in this case, I respectfully disagree. Now, there are plenty of others whose experiences contrast my own. But the bigger point here is: What do you listen to, how loud do you listen, how big is your room, and what do you listen for / expect your stereo system to deliver? 

Fun problem to have,

Considering cost, weight, heat, placement flexibility: I would avoid overdoing wpc,

Happy now with 60wpc, more than likely you will do well with Carvers 275 (75wpc at 4 ohm or 8 ohm).

Bob Carver has created many amazing products over the years.

Your inefficient speakers are currently driven satisfactorily by his 60 wpc SS. Does that amp have any special features to handle momentary peaks that you are benefitting from now? 

IOW, you might assume his 75 wpc tube amp is 'more than' enough to match current performance. I would want to confirm his tube amp also could match momentary peaks like his SS. You might simply ask them that, and how they think their 275 will do with your specific speakers.

His 275 was specifically designed to sound like the classic McIntosh 2275.

Are you considering a McIntosh 2275?

Because of the low sensitivity of a sonus faber  and the low impedance i would recommend at least a one hundred to one hundred fifty watt tube amp with 4 ohm taps. You could try and find a good 6550 or kt88 amp from audio research, sonic frontiers, or rogue. You should be able to find an awesome used model in the 4k range of that power rating. The only upgrade you will need in the future will be good nos tubes and a good power cord but you can add those later. i am worried that a fifty watt amp will run out of steam even on the blues.

I'd go with the rogue sphinx and save some money. It's a very nice amp for only $1500. It's got everything you would ever need including headphone amp and phono. All analog, which to me, is important. Tubes combined with class D hybrid, and it looks great.

i have a triode corporation trv-35ser (35 w integrated with pre in, el34 tubes) driving acoustic zen adagio jrs (6 ohm, 88 db) in my second system, and it’s a very nice combo.  triode is a cool niche brand, and the price is within your budget.  they also offer the trv-88ser (45 w integrated, kt88s), also within your budget.