pro ject phono box s2 1PRO JECT PHONO BOX S2 ULTRA DISCREET DESIGN, HIGH ANALOG PERFORMANCE Phono Box S2 Ultra is a phono stage that sets new standards in its price class. Inspired by the critically acclaimed Phono Box Ultra 500, Pro Ject has taken the same uncompromising analog design and made it part of its S2 series. The result is a discreet MM MC preamplifier that combines true high end sound with a compact and elegant solid metal chassis, designed to shield effectively