Pro-Ject Phono Box S2 Ultra

PRO-JECT PHONO BOX S2 ULTRA – DISCREET DESIGN, HIGH ANALOG PERFORMANCE

The Phono Box S2 Ultra is a phono stage that sets new standards in its price range. Inspired by the critically acclaimed Phono Box Ultra 500, Pro-Ject has taken the same uncompromising analogue construction and made it part of their S2 series. The result is a discreet MM/MC preamplifier that combines true high-end sound with a compact and elegant solid metal cabinet, designed to effectively shield against electrical interference.

This is a phono stage for vinyl enthusiasts who want a natural, harmonious and detailed sound image – without paying high-end prices.

HIGHLIGHTS

• Discrete, opamp-free construction for maximum musicality
• Polystyrene capacitors – “holy grail” in audiophile phono stages
• Precise split-RIAA equalization with extreme accuracy
• Selectable subsonic filter with –18 dB at 20 Hz
• Adjustable input impedance and capacitance
• Four gain levels for both MM and MC
• Solid metal chassis for effective shielding
• Available in black or silver

DISCREET DESIGN WITHOUT OP_AMPS – PURE, ORGANIC SOUND

The Phono Box S2 Ultra is built entirely without operational amplifiers – a rarity in this price range. Instead, Pro-Ject uses a fully discrete construction, where every component choice is made with a focus on signal purity and musicality.

The polystyrene capacitors, renowned among audiophiles for their incredible stability and low dielectric losses, give the phono stage a smooth, natural and harmonious character. Together with the discrete construction, this creates a sound image with warmth, clarity and impressive dynamics.

SPLIT RIAA – ABSOLUTELY TOP-CLASS PRECISION

One of the most advanced features of the Phono Box S2 Ultra is the split-based RIAA equalization, which provides an extremely accurate reproduction of the RIAA curve – something that even expensive competitors often do not offer. This solution corrects both the low and high frequencies separately, resulting in a more linear, balanced and open soundstage.

In addition, the S2 Ultra offers four gain stages, so both MM and MC pickups can be perfectly matched. Input impedance and capacitance can also be adjusted, making it compatible with everything from classic MM pickups to low-output MC systems.

REMOVES NOISE, ENHANCES THE MUSIC

The solid metal chassis acts as an effective electrical shield, reducing noise and interference from the environment. The optional subsonic filter at –18 dB/20 Hz helps eliminate low-frequency rumble from uneven plates or mechanical resonances, providing a more controlled and detailed bass response.

For those who want the ultimate in background quiet and even greater micro dynamics, the Phono Box S2 Ultra can be upgraded with Pro-Ject's Accu Box S2 battery power supply, which further reduces electrical noise.

COMPACT, ELEGANT AND AUDIO-FILTERED FROM INSIDE TO OUTSIDE

The Pro-Ject Phono Box S2 Ultra combines advanced analog technology with a minimalist and timeless design. Available in both black and silver, its compact size makes it easy to integrate into any vinyl setup.

It's a phono stage that elevates even good turntables to several levels – and reveals how much musicality is hidden in the grooves when the electronics behind it are created with passion and precision.