I purchased this product myself for personal enjoyment in July 2017. It is a fantastic amplifier that I have truly enjoyed listening to music with. At the time of purchase, I opted for the C4S upgrade, which is an optional component that stabilizes the electric current coming from the power circuit. This upgrade carries multiple benefits over the base product including lower distortion and noise as well as improved bass. In this review, I will compare this product mostly with Mjolnir 2 from Schiit Audio, although Mjolnir is priced slightly higher, at...