vastly overpriced? not at all. expensive? yest it is expensive, but it is gonna be a hell of an headphone amplifier. unlike some other newer amps who cost more and have very unimpressive specs. simaudio are not clowns. they have more stereophile class A recommended components than any other manufacturer of high end audio. martin logan use their evolution 880 monoblocks to demonstrate their flagship monster neolith electrostatic speakers. c'ant wait to hear this thing with he-6. it is going to be a very powerful headamp. 8 watts into 50 ohms. dac is optional and add 700 to the price. my recommendation: buy simaudio moon 380d dac instead. it has been improved for 2014.
I was supposed to get an audio gd amplifier, but that thing made me change my mind. I will be getting one for sure to use with my hegel hd25 dac. it will replace my b22 and my ef-6.