What's the greatest bargain in SET these days?


Hi, Gang,
I response to my recent review of the Reference 3A De Capo BE speaker, someone wrote that if you really want to hear them sing, you should try them with a SET amp, or words to that effect.
That got me thinking. The De Capo's are 92 db efficient, which (correct me if I'm wrong) seems kind of borderline for low-power SET amps.
In any event, right now I'm running mine with a pair of Manley Mahi mono-blocks. They are switchable from triode (20 watts) to "ultra linear" (40 watts). I run them in triode all the time, and in my room, the volume knob almost never goes past 9 o'clock; more would just be too loud.
All that said, what do you guys think of running the De Capo's with a SET amp? And if I did, what's the best bargain in SET's these days?
Thanks!
rebbi
By the way, I was searching online forums and found a post where this guy bought a Decware "Rachael" amp to potentially replace his Manley Mahi's and reported that "within one song he knew the Decware blew the Mahi away." Just one person's experience but interesting to read.
Also I wonder what the song was? If a chamber work, probably not a big challenge. If a symphony, Rush, Metallica, or a well recorded big band, I wonder if outcome would be the same?
Map,
I don't know the answers to those questions because now I cannot find that post.
I'm not worried that the De Capo's can be driven to satisfying levels with an EL34-based SET amp. My room is medium small and I don't tend to listen at live-concert levels. And Tash Goka of Reference 3A told me that the Antique Sounds Lab 8 watt 300B SET was basically developed with the De Capo in mind. Plus, if you go back and read Tim Smith's Coincident Dynamo review on 6moons, he says that the Dynamo played satisfyingly "big" even on his less efficient Harbeth's.
So at this point I'm not worried about "if" SET, but "which" SET!
As to which one to get without the opportunity to listen to any of them with the Decapos and your budget constraints, I would look at the ones with the heftiest transformers. As has been pointed out, one of the biggest factor in SET designs, what separates the budget from the pricier ones, is the power supply and transformer. This will manifest itself in better dynamics and improved low frequency performance. Over time this may be the area where by going budget you will recognize the sacrifice of performance in these areas. This is MY impression having listened to numerous SET amps in different set-ups, there is no free lunch unless you go with a more efficient speaker. The fact that you listen primarily to small scale music in a small room may mitigate this to some degree.