Pro-Ject Phono Box S2 black 3 quarter front
Pro-Ject Phono Box S2 silver 3 quarter rear

Pro-Ject Phono Box S2 | Phono Preamp

Regular price$199.00

Pro-Ject Audio logo black

Phono Box S2 is Classic Pro-Ject Design, Upgraded and Refined

  • Audiophile performance with high-grade amplifications modules and WIMA capacitors
  • Dual mono for maximum noise isolation
  • Precise RIAA equalization
  • Handmade in Europe

Pro-Ject Phono Box S2 silver on bench connected to blue Debut Carbon EVO turntable

Elevating the Fundamentals

Phono Box S2 is the successor to the world-famous Phono Box S, which offered unrivalled sonics and versatility at a price that was unheard-of. S2 is a refinement on that model with an upgraded chassis & circuitry to deliver more micro-detail, improved dynamic-handling, heightened clarity with a soundstage usually found in much more expensive products. Phono Box S2’s housing is an aluminum/steel sandwich construction that is not just sleek aesthetically, but also shields the circuitry from potentially harmful electromagnetic interference and vibration. The bottom DIP panel allows for fine-tuning of electrical parameters with nearly any MM or MC cartridge available.




  • Input impedance: 10Ω, 100Ω, 1kΩ A
  • Input capacitance/impedance: 100pF, 200pF, 320pF and 420pF */47kΩ B (Input capacitance is irrelevant for low output MC cartridges.)
  • Input gain: 40 and 43dB B / 60 and 63dB A
  • Noise floor MM: 94dB (A weighted) at 40dB and 43dB input gain
  • Noise floor MC: 75dB (A weighted) at 60dB and 63dB input gain
  • THD MM: <0.01% at 40dB and 43dB input gain
  • THD MC: <0.05% at 60dB and 63dB input gain
  • RIAA-equalisation curve accuracy: 20Hz – 20kHz / max. 0.4dB
  • Subsonic filter: at 20Hz with 12dB/octave
  • Input: 1 pair RCA/phono sockets
  • Line-level output: 1 pair RCA/phono sockets
  • Outboard power supply: 18V/500mA DC, suitable for your country’s mains supply
  • Power consumption: 85mA DC, <1W in standby
  • A: typical for low output MC cartridges
  • B: typical for MM cartridges or high output MC

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