Had a SR1 on loan for a week. Similar to Unico. Couldn't believe how different the sound can be just by swapping the tubes.
Original tubes - Full warm sound but not too good detail, clarity and transparency.
Electro Harmonix tubes - Leaner sound, much improved detail, clarity and transparency, and tighter bass.
I'm no expert in tube rolling, but based on my limited experience, you might want to try how different tubes may give you tighter bass and better detail before you dump the Unico.
Don't think you can get better sound by downgrading the amp so that it is in the same league as your other equipment. Yes, you may not be doing justice to a good amp if your other equipment is not up to mark, but you certainly wouldn't be making your system sound any worse with that good amp.
Original tubes - Full warm sound but not too good detail, clarity and transparency.
Electro Harmonix tubes - Leaner sound, much improved detail, clarity and transparency, and tighter bass.
I'm no expert in tube rolling, but based on my limited experience, you might want to try how different tubes may give you tighter bass and better detail before you dump the Unico.
Don't think you can get better sound by downgrading the amp so that it is in the same league as your other equipment. Yes, you may not be doing justice to a good amp if your other equipment is not up to mark, but you certainly wouldn't be making your system sound any worse with that good amp.