Little information available.
It would be helpful if the owners - or those who had the chance to try this interesting amp - gave us their impressions.
Anyone try this?
Firestone Audio has created a component that every major headphone enthusiast must-have to experience music the way it should be. Bobby is a Pure-Class-A, fully balanced headphone amplifier with both of single-ended Signals/Inputs and a balanced Signals/Inputs interface. By utilizing a high-quality volume control chip (the PGA2311), this not only reduces the distortion of the sound but with lower errors or jitters. The audio signal is greatly enhanced by four fully identical amplifying circuits and tone tuning high-quality active and passive components.