I liked the Nirvana sx. But the Tg Audio beat it here. More cohesive, vivacious regardless if it was a Blue Note record or a large Symphonie. More hall info, better bass soundstaging - better PRaT too. On a Basis, Blue Circle, Merlin setup. The other thing is the Nirvana is real poor ROI. I haven't heard the Jena in my setup, I would love to hear you impressions if you decide to demo a pair!