My friend owns the Absolare SET mono's with the matching SET preamp & I 2nd Triode's comments. They sound sublime driving his Marten Coltrane 3's in his small-medium size listening room with some nice Elrog tubes rolled in. Though in a medium or large room, I would go for the hybrid mono's with his Coltranes as they have better low impedance drive, yet retain the SET's sound signature.