Phono Box S2 Ultra

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Phono Box S2 Ultra
The Phono Box S2 Ultra is like no other phono stage available today. Punching well above its weight for sound quality, it replaces popular S-Line originals and boasts an array of features for easy pairing with any modern cartridge.

The Phono Box S2 Ultra utilises a fully discrete electronic layout without the use of operational amplifiers (op-amps). Op-amps are commonly used in phono stages to increase the quiet sound from a pick-up cartridge to a level that modern amplifiers can use. However, by shifting away from that technology, Pro-Ject are able to produce a device with a warm, harmonious sound. In addition, the use of polystyrene capacitors makes the Phono Box S2 Ultra almost unique on the market, as such components are normally reserved for far more expensive products. Elsewhere, the split RIAA equalisation circuit enables pin-point accuracy of the RIAA curve and the introduction of a subsonic filter ensures your music sounds right in any environment.

The Phono Box S2 Ultra delivers a true audiophile sound performance that belies its small form and attractive price. With a sonic signature that delivers the full beauty of a vinyl record, it also remains easy to set up. With a series of dip-switches on the bottom of the solid metal casework, there are multiple settings for impedance (MC), capacitance (MM) and gain – so any modern Moving Magnet or Moving Coil cartridge is easy to accommodate.

This product is no longer available to order and will not be coming back into stock.

In Stock products are those that are currently held in stock at our Oxfordshire warehouse. This stock status is updated regularly but is subject to change at very short notice.

Products that are Awaiting Stock are items that we would normally carry on stock at our Oxfordshire warehouse, but are currently unavailable. Chances are there is already more on the way, but if you would like a more accurate availability status please feel free to Contact Us.

Urgent order items are products that we do not normally carry on stock, but they are typically held on stock by our European suppliers. Depending on availability, we will seek to order these products quickly, when we have an enquiry. They can therefore be subject to quicker availability times than "Special Order" products.

Special Order items are those that are most often built to order. For these items, we tend to experience longer lead times as we negotiate them into the production line with our suppliers.

Phono Box S2 Ultra

RRP: £219.00

The Phono Box S2 Ultra is like no other phono stage available today. Punching well above its weight for sound quality, it replaces popular S-Line originals and boasts an array of features for easy pairing with any modern cartridge.

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Martin Pipe , Hi-Fi World , March 2019

Discreet – and discrete!

"This little phono stage does a wonderful job. Excellent detail and dynamics, very musical, compact and practical design."

See full review

Ed Selley , Hi-Fi Choice , May 2019

Stage craft

"...this is a flexible and attractive phono stage that deserves to be high on any audition shortlist at the price..."

See full review


format_quoteHenley Says...

Pro-Ject’s S2 series offers a flexible and modular approach to upgrading entry-to-mid-level HiFi systems. Designed for those who want high-quality performance without unnecessary bulk, these compact yet powerful components allow you to tailor your setup to your exact needs—without paying for features you won’t use.

Whether you prefer a discreet addition that blends seamlessly into your system or a uniform stack of neatly matched separates, the S2 range provides a practical, high-performance solution. With their sleek design and precision engineering, these units deliver impressive audio quality while maintaining Pro-Ject’s signature minimalist aesthetic.

For anyone looking to refine their system with versatile, space-efficient upgrades, the S2 series makes it easy to achieve a setup that looks as good as it sounds.

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Dan Cottingham Marketing Coordinator

  • PDF | 100 Kb | Hi-Fi Choice Review

  • PDF | 3 Mb | Hi-Fi World Review

  • PDF | 842 Kb | Product Info Sheets

  • PDF | 143 Kb | User Guide

  • PNG | 10 Mb | Stock Photo (Black)

  • PNG | 15 Mb | Stock Photo (Rear)

  • PNG | 12 Mb | Stock Photo (Silver)