AXPONA’s Master Class lectures offer a series of seminars on sometimes controversial subjects. To wrap up Friday afternoon’s talks, Channel D’s Rob Robinson explained why for phono preamplifiers, current-mode amplification, with its zero-ohm input impedance, gets the best signal/noise ratio from moving-coil cartridges, compared with conventional voltage-mode circuits, and even improves tracking performance. Michael Fremer reviews Rob’s new Lino C 2.0 current-mode phono preamplifier in the June 2019 issue of Stereophile.