Now that I see the whole picture, this makes more sense. You can use the Manley as a preamp and a headphone amp. I’d go ahead and get the EVO-100 power amp. I’d not get the Mystere close out. The Mystere basically becomes a tone control depending on what speakers you have. This is because the Mystere is not an ultra linear design. Your results could be great. Or they could suck. No telling. The EVO-100 power amp is the better choice.You're killing me.
The situation is I'm trying the Manley as of last night. I just can't see parting with it moving forward.
It is in fact otherworldly (somehow more warm AND more clear AND instruments are better separated AND more glued together at the same time AND the bass is even better....) All this and I'm still 1 hour into Manley's "50 hours" minimum break-in before it sounds it's best. It also fits the space I have perfectly.
I can swing it and say an EVO 100 Power amp right now, which would also fit the current space.
I'm not sure I want to go in for the Manley and the 300 power amp at the moment budget wise. Besides, one might as well get the integrated at that point just due to the extra uses later for only a 100$ difference. Size wise I could hide it behind some things here and just power it on when in use as a power stage but that's a LOT more than I want to spend at the moment.
So I guess it comes down to the difference in the power amp stage sound for me. If it's really significantly better even with the same external pre then I suppose I will just have to wait. Unless the EVO's really do hold value better than most so that I could trade up later if our layout changes or as budget allows. I'm currently out of things to sell and trade beyond that point.