Pro-Ject Phono Box S2 Ultra
€249.00
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.
Compatible upgrade power supply: Accu Box S2
Features
- 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 |
Downloads
Manual [pdf]
Product Information [pdf]
Reviews
Hi-Fi Choice reviews the Phono Box S2 Ultra
UK, 05.2019
Conclusion: With a consistently impressive performance and the ability to handle upmarket cartridges, this is a flexible and attractive phono stage that deserves to be high on any audition shortlist at the price.
Review
Ed Selley
Golden Ear Award 2021
1st place in the “Phono Preamp up to € 2000” category!
Review
Malte Ruhnke
Golden Ear Award 2021
2nd place in the Phono Preamp category.
Review
Andreas Eichelsdörfer
Hi-Fi World reviews the Phono Box S2 Ultra
EN, 04.2019
This little phono stage does a wonderful job: Fantastic sound and fantastic value! Pro-Ject should be congratulated!
Review
Martin Pipe
Mint reviews the Phono Box S2 Ultra
DE, 10.2019
BUILD: solid aluminum housing
SOUND: From a very emotional point of view, one of the most rousing, most intense preamps of this test – independent of the price!
Review
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