DeVore O/93 or PureAudioProject Duet15 for a First Watt SIT-3?

My speakers are named in the opening message. Are Avalon Indras, a top speakers perfect for 89db listening, less for 69db night. 

I reread your original post and I think you are proceeding on an erroneous assumption. First I hate it when people say that one speaker is better with a certain genre of music than another. This makes absolutely no sense. Other than output levels, the best rock speaker will be the best jazz speaker. I also think that your choice of amp will have more influence than the type of speaker on low level listening. Tube amps have better low level resolution and are more linear. Of course assuming a speaker that is relatively tube friendly which your Avalons are not. 

@lemonhaze i picked up the Komuro 8w upon auditioning in store with their O96 Bronzes. Whatever shortfalls the Devores have, this amp minimizes them. Heard the Komuro after listening to Nagra classic amp and pre, and it made the Nagras  sound lean and harsh by comparison. 

We spent a great deal of time listening to the O/96s with single and parallel 300B SET amps and these did not have nearly enough power. The speakers opened up with about 30 watts plus and decided that the best sound came from a pair of 60W OTL monos.

I am convinced that the lower wattage went into a very soft clip quickly that actually made the sound a bit larger than normal. The sound thickened. So I (we) felt that actually the lower powered amps gave some perhaps more of what they liked but this certainly did not do justice to the source. So in my experience, the worst amp for these speakers were push pull designs followed by the lowered power single ended. The speakers were best served by a more neutral tube amp of higher power that wasnt a push pull type. 

Hours of direct comparison were needed to really sort this out. Most of this was done on the O/96s and some on the O/93s. The only components changed were the amplifiers. These sessions were extremely valuable and really elevated our listening acumen. Of course it also ruined about 10 songs due to overexposure.

With these speakers, the only type of single ended design I would consider would be an 845 or 211 type. There is no denying the quality of single ended midrange, but I tend to like these amps when paired  with a less "meaty" sounding speaker. Perhaps too much of a good thing.

No matter how efficient the speaker, there will will always be the struggle between high power authority and being king of your domain, versus low power beauty and finesse. Go with the 96 (end game) versus 93 (more affordable) if you can. Try high and low power amps and pick of get the best in one price class and have fun!