I don't want two amplifiers. I know myself, and if I have to face a decision tree every time I want to listen to music I am going to tend not to walk into the listening room.
(Quick related story: I am noticing that with the system I am listening to music several hours per week instead of several hours every month or two with my other system in the same room. Why?
With the prior system I used to cover the Martin-Logan Prodigys and cover the amps and cover the turntable. It was kind of a hassle to prepare the system for playing.
This time, to keep dust off the components, I am doing it the other way, and I have three serious air cleaners maintaining the room like a "clean room." It is hassle free (and dust-free) and after merely flipping a few switches I can play music. It is a much better system for me if I want to actually enjoy the stereo.
So if there's too much hassle or friction for me to play the stereo history suggests I am simply not going to do it. I really like this time being able to just walk into the room and get the system going quickly.)
I am expecting at a 70% or 80% confidence level that 1/10th power of the VTLs is not going to be able to separate and untangle complex classical music or have the dynamics for rock.
I want to see on what types of music -- on what percentage of the music I listen to -- can 50 watts to 100 watts* sound better than the VTLs?
I actually think the VTLs do a fantastic job on complex classical symphony orchestra music. But that's about 10% of my music listening.
If the JA100s with EL34s (60 watts) sound significantly more emotionally engaging on girl with guitar and pop like Fleetwood Mac then I would look for Absolare SET or Mastersound PF100. But then I still would need the VTLs to play big classical for my friends. But I don't want two amplifiers.
*I have given up on the Drina/Elysium because of the low input sensitivity, and I don't think I can get comfortable with the Magma New with "direct DC coupling."
How does dust prevent you from listening to music? Just curious about that...everyone I know just leaves stuff uncovered and once in a while dusts it off...certainly not everytime before playing.
"I am expecting at a 70% or 80% confidence level that 1/10th power of the VTLs is not going to be able to separate and untangle complex classical music or have the dynamics for rock."
A) What does power have to do with untangling complex music...you want an amp with high enough resolution to do this...and is not being driven into clipping. Given your listening levels you are unlikely to run into clipping with most music.
B) Most rock music has very little dynamics...period. There is a website that shows all the dynamic ranges of many popular music albums of the last 50 years and they are mostly heavily compressed.
I once attended a demo of a McIntosh system where they were touting their 2 or 3KW multi-chassis "monos" and huge speakers (95dB) in a very large conference room. The demo showed some pop music where it was quite loud and the needles on the Mc amps barely moved from 1 watt. Then the guy put on some track that had a gunshot recorded almost without compression and the needles hit 2KW! He then said, "See this is why you need this much power so you never clip". I said, "Actually, you demonstrated that with these speakers and most music you need very little power to play loud".
If the Jadis are doing a worse job of unraveling classical works it will be because of other factors (output transformers, drive circuit, feedback design etc. that affects distortion patterns when things get complex) than power.
The Magma DC coupling is only from the input and driver stages...the output is transformer coupled like nearly all SETs (there is a SET OTL from Transcendent sound but it is like 2 watts and Aries Cerat used to have a huge one that made 20 watts). Nothing to be afraid of...they just feel that coupling the input/driver stage to the output is more pure than using a capacitor or transformer...they are not the only ones who do this.