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Pro-Ject Phono Box Ultra S2 Phono Stage
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Pro-Ject Phono Box Ultra S2 Phono Stage

  (1 Review)
£162.50 Exc. VAT |  



Pro-Ject Phono Box Ultra S2 Phono Stage

Pro-Ject Phono Box Ultra S2 Phono Stage is like no other phono preamplifier in its segment. The incredible success of the Phono Box Ultra 500, incited Pro-Ject to introduce this marvellously sounding phono preamp into the regular S2 line. The solid metal casing protects against interference and the internal design remains as spectacular as before.

No OpAmp

Pro-Ject are offering a fully discrete, OpAmp less design, which enabled us to realize an incredibly harmonious sound. On top of this, they decided to use polystyrene capacitors, which significantly contribute to the high-end sound of the Phono Box S2 Ultra. These capacitors are known amongst audiophiles as the holy grail for phono preamplifiers. The split RIAA equalization enables a pin-point accurate representation of the RIAA curve, a luxury many other phono preamps do not possess.


  • Audiophile Performance
  • No operational amplifiers used!
  • Audiophile-grade polystyrene capacitors
  • Precise RIAA equalisation
  • Switchable Subsonic filter –18dB @ 20Hz
  • Switchable input impedance/capacitance
  • Solid metal casing prevents interference
  • Six adjustable gain levels
  • Outstanding sound quality

Technical Data

  • Impedance: 10/100/1k/47kO
  • Capacitance: 100/220 pF
  • Gain: 40/43/50/53/60/63dB
  • Subsonic: -18dB @20Hz
  • SNR: -89dB V (MM)
  • THD: 0.00052%
  • RIAA: <0.4dB / 20Hz-20kHz
  • In/Out: pair RCA sockets
  • Power consumption: 18V / 80mA
  • Outboard supply: 18V DC / 500mA
  • Dimensions (WHD): 103 x 37 x 119mm
  • Weight: 570g
Average Rating (1 Review):  
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S2 Phono Stage
Wednesday, 24 April 2019  | 

Excellent quality in build and more importantly on the sound once the settings have been established. Treble was much smoother on the ESL63's. Recommended.

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