Mjolnir Balanced Headphone Amplifier Topology: Fully discrete FET, cross-shunt push-pull Crossfet output stage, no overall feedback, noni Inputs: one pair balanced XLR, one pair single-ended RCAs (choose one) Outputs: one 4-pin balanced female XLR, one pair dual 3-pin female XLR, and one pair male XLR preamp