Which 300B SET for SF Guarneri Homage?

I second one of the earlier posters - Canary CA-339 - 50 watts of push-pull 300B power. Everything you like about 300B's but with real world power.
Built like a tank and weighing nearly the same.
Available for reasonable amount used on Audiogon fairly regularly.

I think the OP may be getting a little confused at this point. Will it work or won't it? My answer still is, "it could".

I haven't heard the CF's paired with the GH's so I don't know how "that" pairing would work and even if I have, what works for me may not for the OP.

What I gleaned from reading the topic was:

His 30 watts from his Aleph 3 was sufficient for him.

He likes Opera (midrange?), he's not looking for louder, he wants a more "real life" experience and wants to try a 300b. I think the "right" 300b amp might give him that (for ultimate purity, try and stay single ended). My Cary 300b's put out 15 wpc. That's 3 db less power/not a big deal/might work for him/does for me. I get a beautiful midrange.

The dream would be for him to try an amp out and see for himself. The reality is, that's going to be tough. So, short of that, you gather as much info as you can and make the best decision.

How loud is probably the most important factor. With the 87 db spec, you will not get 107 db out of any 300b single ended amp. On the other hand, you can you can get 77 db with 1/10th of a watt, 67 db with 1/100th of a watt. Ever hear how loud 67 or 77 db is? Not so loud for some, enough for others. (Factor in listening distances and the size of the room).

So again, in a 300b/GH pairing, I say "it could" work. Depends on how loud and the quality of the amp.

Where is my award? I want my award! ;-)

Onemug,
That was a very good post. I agree with the COULD work given the OP stating his listening level is modest and he sits only 8 feet away. Eight quaility watts may very well be enough, with a revealing system 65-80db is plenty of volume.

Guys, I think you are missing the point here a little... Sure the Frankenstein COULD work and maybe the OP would be happy with them. BUT, the Frankenstein might not/probably wouldn't work with the SF GH's. It seems to me that if the OP doesn't have the opportunity to listen to this combo himself, it would be far more prudent to acquire an amp that very definitely WILL work with the GH's.
The Dragon amp by the same Co. WILL work with these speakers; not COULD work with these speakers-- I think we can all agree on that.
As an owner of the GH's, and having tried this very speaker with low powered 300B amps, I know as a FACT that the300B amps that I have tried with this speaker do NOT work well ( at least in my small room). Unless you own this speaker and the amp in question, all else is supposition. At the end of the day, UNLESS the OP is able to hear the Frank/GH combo for himself, then it is a crap shoot as to what the result will be for him.Knowing these speakers, like I do, I personally wouldn't take that risk. Just IMHO.

NO DON'T EVEN THINK ABOUT IT!!!
The Border Patrol 300B cannot express any high frequencies when mated with Guarneri Hommage that acts like a HF filter!!!
The Goldmund Mimesis 8.4 monoblocks 185 Watts cannot express their speed & finesse either with Guarneri that acts like a brake, destroying the tonal quality of both!!!
Don't get fooled by their size or the tricky specifications:
They need plenty of room to breath their image & voice capabilities and they are VERY demanding of the amplifier that feeds them.
As a comparison example I let you know that a Proac Response 5 in the same small room (3x5 meters) with the same set-up, feels much better and plays the same SPL for half the volume setting!!! (and loves the Border Patrol as much as the Goldmund. In fact I could never manage to clearly prefer one over the other so I pick them both for it).
The Guarneris are going to mask the delicacy of a highly sophisticated but week in current power amp. Also they refuse to open-up the midrange and keep even an average bass foundation if your amp does not have plenty of reserve power both with a full body & robust personality. (in a contradiction the Krells can't do it right).
Make no mistake here. They want big & "beefy" amps. (At the Sonus Faber factory they use an integrated Accuphase).
Also, the minimum room for them is about 5x6 meters otherwise they cannot image the scene (no soundstage at all).
The absolutely best amp that I really love to pair with them is the Jadis Defy 7. (despite I am a 300B SET fun).
I'm afraid you have to choose between SET & Guarneri.
But in a small room & with a preference to low listening volume level...I'm sorry. I wish you to get rid of them and find a way to better serve your listening & not your decorative needs. You see the reviewers are not allowed to inform the people for the specific needs of the Guarneri so, we can assume that is just another small & manageable mini monitor...
So far from the truth!!!
Good luck

FWIW: find a way to listen the Transmission Audio M1i

George