I own one of the Aural Thrills 300B amplifiers. I use this to run a pair of Klipsch Cornwall (100db efficient) speakers. Obviously this amplifier has no problem driving these speakers. I don't really know what the leaset efficient speakers would be that these amps would drive. This would be a question for Tom at Aural Thrills.
However, I will say that this is the best sounding amplifier that I have heard on my Klipsch Cornwall speakers. The soundstage is huge. The detail, dynamics, and bass are first rate. The Aural Thrills 300B amplifier trounces my Cary 300B SE monoblocks.
However, I will say that this is the best sounding amplifier that I have heard on my Klipsch Cornwall speakers. The soundstage is huge. The detail, dynamics, and bass are first rate. The Aural Thrills 300B amplifier trounces my Cary 300B SE monoblocks.