Product Code: Phono Box S2 Ultra

Pro-Ject Phono Box S2 Ultra sale


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Pro-Ject Phono Box S2 Ultra

Discrete MM/MC phono preamplifier

Phono Box S2 Ultra – Luxury and audiophilia combined!

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

We are offering a fully discrete, OpAmp less design, which enabled us to realize an incredibly harmonious sound. On top of leaving out operational amplifiers we 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 split RIAA equalisation
  • Switchable Subsonic filter –18 dB @ 20Hz
  • Switchable input impedance/capacitance
  • Four adjustable gain levels
  • Solid metal casing protects from interferences
  • Outstanding sound quality
  • Available in silver or black

Technical Specifications

  • Input impedance 10 Ohm/ 100 Ohm/1 kOhm / 47 kOhm
  • Input capacitance 100 pF/ 220 pF
  • Gain switch 40dB/43dB/60dB/63dB
  • Subsonic switch -18 dB @ 20 Hz
  • Signal-to-noise ratio 89 dB V (MM)
  • THD 0.00052%
  • RIAA accuracy < 0.4 dB / 20 Hz - 20k Hz
  • In/Out sockets 1 pair RCA connectors
  • Power consumption 18 V / 80 mA
  • Outboard power supply 18 Volt DC/ 500 mA
  • Dimensions ( W x H x D ) 103 x 37 x 119 mm
  • Colour silver or black
  • Weight 570 g without power supply

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