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
Sorry for the delay, but my dinner turned in to a spontaneous trip to Hawk Cay in the Florida Keys with my dinner mates. Hawk Cay is beautiful and dynamic just like the Coincident Dynamo 34se.

The Dynamo is located in my 14x16 home office, so all my top-notch gear is located in the living room and bedroom. As such, beside the Dynamo I've gathered together a bunch of my older cables, interconnects, DAC, transport, and so forth. I mentioned them earlier in this thread. My speakers here are the same Tekton M-Lore Tim Smith used in his outstanding 6 Moons review. Please read Tim's review. It says everything about this amp better than I ever could, it mirrors my experience almost exactly after I changed some tubes. Remember, I bought this model used for eight hundred bucks and I decided I'd spend the $500 dollar difference of its retail price on tube or other upgrades. My used unit came with Gold Lion KT77s with about 200 hours on them and a highly recommended NOS Phillips 5R4GYS which should be compatible with this amp but not recommended by Israel Blume, plus the standard Shuguang Electron EL34 as well as a pair of Shuguang 6SL7.

How did it sound? I thought it sounded very good but knew I could improve it. My wife thought there was something off, she didn't like the bass. I told her not to worry I was calling Brent Jesse and ordering a Mullard 5AR4 rectifier plus installing a matched pair of Sylvania 6SL7WGT 229 that I had in my tube stash. For now the Shuguang EL34s were staying in the unit as I wanted to get a feel for them with the new rectifier and 6SL7s. Once installed in the amp these tubes elevated everything, there was a huge transformation for the better. To borrow from Tim Smith, "purity of tone, the sense if space, PRaT, the inner detail, the fatique-free musicality, the druggingly delicious sweetness that single-ended tube amps provide, life-like vocals, a realistic guitar pluck, the long decay of a single piano key, a realistic double bass arco or banjo hammer-on in our listening room." Yes, the Dynamo does all those things and more. It is stunning, truly amazing.

I am going to purchase NOS RFT Siemens EL34s as well as Black Treasure 6CA7s, the NOS RCA Red Base 5691s for sure, perhaps later different cables, etc. This amp is worth it, it deserves the best; or, leave it stock. It is killer good. A no brainier. It is the best bargain I ever heard. Israel Blume deserves high praise. I could live with this amp forever. It does so much right. Read Tim's review. The best bargain SET to these ears, for once my wife agrees. Perhaps the best bargain in all of audio.
Hi Mikirob,
It has to be especially satisfying to get such exceptional sound for a very reasonable cost. This amplifier has the foundation (simple circuit, strong power supply and high quality transformers) so better tubes will be very apparent when used. This amplifier has the potential to keep you happy for a long time. You mentioned Brent Jesse and I've not dealt with him. I'll see if he has any Mullard CV 378 rectifiers for my Frankenstein.
Charles,
Charles, I'm fairly certain Brent Jesse has the Mullard CV378. A couple of other thoughts I didn't mention in my comments: The stage was enormous, all instruments were easy to identify, truly coming from black backgrounds. Voices were centered and extremely real. Nothing was syrupy. Totally organic and natural, the music flows as it should. Dynamics are fabulous. This little Dynamo can play anything, large orchestra, Chamber, Jazz, Rock, Folk; it gets it all right. This amp is going to be a lot of fun, not only rolling tubes and tweaking, but discovering the music all over again. And I have a great urge to go out and purchase more music because at heart I am a music lover and this little baby delivers the music.
Charles, I have had good experiences dealing with brent Jesse. I did not see CV378s on his list the last time I looked, but it is worth giving him a call anyway.
Got some more listening in tonight. These CV387s are really opening up.

Mikirob, I also found the Mullard GZ34/5AR4 to be an outstanding rectifier for the dynamo. I've never really found that tube to be all people make it out to be, but in the dynamo, it really shines. I have to tell you, as much as you like the dynamo, you are going to loose your mind when you hear the franks.
Mikirob,
I can relate to your genuine enthusiasm regarding this amplifier and it seems you and I have very similar listening taste and priorities. At this point in my life I've been fortunate to have experienced quite a large variety of amplifiers. Transistors (high or moderate power, class A and class AB) many push pull tube designs, OTL and class D versions. Within each category there's a hierarchy, some clearly better than the others.

No topology has gotten it as right as a well executed high quality SET IMO, nothing. They have introduced me to a level of natural sound and musical realism unmatched by other amplifier alternatives. Obviously this preference is personal and each person has their own choice to make. I get the sense that the SET genre will emotionally reach your music loving soul more thoroughly than other topologies have done for you.