I've had the Rogue Medusa and Fountaine Signatures in my system at different times, and I'd really like to hear what they sound like together. I think the clean detail the Medusas provide up top combined with the Fountaine's refined treble would make a very nice combo along with the Rogue's expressive mids, fluid dynamics, 3D soundstaging and very tight bass. Would also like to pair them with something from Clayton or maybe a Plinius 103. Best of luck.
