Pro-Ject Phono Box S2 Ultra

The Phono Box S2 Ultra is like no other in its segment. The incredible success of the Phono Box Ultra 500 has prompted Pro-Ject to introduce this phenomenal sounding phono preamp to the regular S2 line. The solid metal case protects against interferences and the internal design remains spectacular as before.

The phono preamp offers a fully discrete, OpAmp-free design that allows you to achieve an incredibly harmonious sound. In addition, polystyrene capacitors are used, which significantly contribute to the high-end sound of the Phono Box S2 Ultra. These capacitors are commonly known in the audiophile scene as the holy grail for phono preamps. The Split RIAA equalization used allows accurate conversion of the RIAA equalization curve, a luxury feature not found in many other phono preamps.

Features Pro-Ject Phono Box S2 Ultra

• Audiophile Performance
• No OpAmps used
• Audiophilic polystyrene capacitors
• Precise RIAA equalization
• Switchable subsonic filter -18 dB @ 20Hz
• Switchable input impedance/capacitance
• Six different amplification levels
• Solid metal housing protects against interferences
• Impressive sound quality

Technical data

• Input impedance 10 Ohm/ 100 Ohm /1 kOhm / 47 kOhm
• Input capacitance 100 pF/ 200 pF
• Gain factors 40 dB/ 43 dB/ 60 dB/ 63 dB
• Subsonic filter -18 dB @ 20 Hz
• Signal-to-noise ratio 89 dB V (MM)
• THD 0.00052%
• RIAA deviation < 0.4 dB / 20 Hz - 20 kHz
• In/Out connectors 1 pair of RCA sockets
• Power consumption 18 V / 80 mA
• Oversized power supply 18 Volt DC/ 500 mA
• Dimensions ( W x H x D ) 103 x 37 x 119 mm
• Weight 570 g without power supply unit