Almarg............
I use an Audible Illusions Modulus 3B all tube preamp with my Stratos Extreme with zero problems.
Papostol...........
I have a Rogue Cronus Magnum in a second system and I do not find it lean at all. You can swap out the preamp tube (the middle 12au7) with a Mullard CV4003 from Upscale for less than 100.00. There will be no more leanness in your amp. I think it is the Monitor Audio speakers and not the amp. If you feel you must change the amp, I would go with the Odyssey Stratos. It is on the warm side of neutral and is not bright or etched at all.
I use an Audible Illusions Modulus 3B all tube preamp with my Stratos Extreme with zero problems.
Papostol...........
I have a Rogue Cronus Magnum in a second system and I do not find it lean at all. You can swap out the preamp tube (the middle 12au7) with a Mullard CV4003 from Upscale for less than 100.00. There will be no more leanness in your amp. I think it is the Monitor Audio speakers and not the amp. If you feel you must change the amp, I would go with the Odyssey Stratos. It is on the warm side of neutral and is not bright or etched at all.