I run my Freya (original version) into a Dennis Had Inspire "Firebottle" high output (ha...12 to maybe 17wpc depending on tubes) tube masterpiece...a seriously great sounding amp, and then succumbed to the hype regarding the Schiit Aegir and bought one late last year...although the first one they sent was flawed (tripped its safety mode WAY too easily), the replacement (no charge for that) worked seemingly as it should. I have efficient Klipsch Heresy IIIs, and don't crank em up too much, but when testing the Aegir, the new one STILL managed to shut down once...wasn't hot, wasn't particularly loud (and note that the Heresies can get very loud with just a few watts), but that was somewhat off-putting. It is a nice sounding amp for SS, but when I stuck my Had SEP amp back in there it was no contest...the Had has the effortless speed of a snappy single ended tube amp, and made the Aegir seem artificial, and like I said, somewhat untrustworthy. The Vidar might be a better choice but otherwise maybe a Jolida (Black Ice?) tube amp as they're a bargain (had one, it was amazing). Used Primaluna power amps abound also. If you're lucky you could possibly get a Had amp someplace, as that's what really gets the soul stirred.