Same here but at $129, compared to $695 for Amarra, it's not a bad deal.
Listening to the JH13's out of the Amarra 4 headphone out and it is the best I've heard the JH13 out of an amp. It's dead quiet with the source paused. While, at $4000 retail for the Amarra 4, when you consider it's your source, preamp, phono pre and headphone amp, and damn good at all of them, it's not a bad deal.