Of course, I would be remiss if I didn't chime-in with my preference for my David Berning custom choke-loaded 45 SET-ZOTL with battery-power. A one-off variation derived from the Berning Siegfried SET-ZOTL, custom built by David for me a few years ago.
The Type 45 triodes are my favorite, and I'm currently using the Emission Labs Mesh-plates. I use NOS Sylvania for the 6SN7 tubes.
The big thing for me with this amp, is that it gives the "true" Single-Ended-Triode sound, but requires no output tranformer to get in the way of the frequency extremes. This provides the SET "Golden Midrange" for the entire frequency spectrum, instead of limiting that beauty to just the midrange.
It is quite spectacular, when paired with the high-efficiency single driver speakers that are needed for it's very low 2wpc output. Naturally, the very deepest bottom octave is sacrificed(speakers roll-off at 41Hz) in a system of this type, but the rest of the spectrum easily makes up for that(unless you are the most ardent deep bass-freak!) I've seen "bass freaks" forget all about the deep bass when being mezmerized by this system. The coherence and "rightness" of the sound makes you forget all about "parcelizing" the sound, and you just melt into the music.
The Type 45 triodes are my favorite, and I'm currently using the Emission Labs Mesh-plates. I use NOS Sylvania for the 6SN7 tubes.
The big thing for me with this amp, is that it gives the "true" Single-Ended-Triode sound, but requires no output tranformer to get in the way of the frequency extremes. This provides the SET "Golden Midrange" for the entire frequency spectrum, instead of limiting that beauty to just the midrange.
It is quite spectacular, when paired with the high-efficiency single driver speakers that are needed for it's very low 2wpc output. Naturally, the very deepest bottom octave is sacrificed(speakers roll-off at 41Hz) in a system of this type, but the rest of the spectrum easily makes up for that(unless you are the most ardent deep bass-freak!) I've seen "bass freaks" forget all about the deep bass when being mezmerized by this system. The coherence and "rightness" of the sound makes you forget all about "parcelizing" the sound, and you just melt into the music.