Project Phono Box S2 Ultra

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The Project Phono Box S2 Ultra offers an audiophile quality sound, on a level with many higher end models, with an array of features to compliment any modern turntable cartridge.

With a fully discrete electronic layout, the Phono Box S2 Ultra is able to boost levels without the use of operational amplifiers found in most modern phono stages. Instead the Phono Box S2 Ultra produces a warm, harmonious sound from the cartridge. The use of polystyrene capacitors make this phono stage almost unique on the market, by using components that are more often found in higher end, expensive products. The split RIAA equalisation circuit allows for incredible accuracy of the RIAA curve, whilst the introduction of a subsonic filter lets your music sound good in any environment.

The Phono Box S2 Ultra delivers an audiophile grade performance despite its compact size, and is able to reproduce the music from the vinyl with a sonic signature highlighting the unique vinyl nature. The Phono Box S2 is also fitted with a series of variable settings to adjust the phono stage to any particular cartridge, including impedance (MC), capacitance (MM), and gain.

  • Project Phono Box S2 Ultra compact phono stage
  • Discrete layout without op-amps
  • Audiophile grade polystyrene capacitors used
  • Split RIAA equalisation produces greater accuracy of RIAA curve
  • Variable settings for impedance, capacitance and gain to match any modern cartridge
  • Available in Black or Silver finish
More Information
Product Specifications

Input Impedance            

10 / 100 / 1k or 47kΩ

Input Capacitance

100 / 220 pF

Gain Switch

40 / 43 / 50 / 53 / 60 / 63dB

Subsonic Switch

-18dB @ 20Hz

Signal-to-Noise Ratio

89dB V (MM)



RIAA Accuracy

<0.4dB / 20Hz - 20kHz

In/Out Connectors

1 pair RCA Connectors

Power Consumption

18V / 80mA

Power Supply

18VDC / 500mA


103 x 37 x 119mm


570g (Without PSU)


Your Delivery:

Orders received before 1:00 pm* will be despatched the same day and can be delivered for next working day, (except bank holidays).  For you convenience you can choose multiple shipping options on the checkout page. We will also email with your tracking and dispatch information.

30 Day Returns Policy

HiFix is committed to selling quality products which we hope you will love, we do understand, however, that there maybe a time when you need to exchange or return something you have bought. We really do hope you are pleased with your purchase but should you wish to return anything bought from us, we will be happy to refund or exchange a product within 30 days.

NameSKUQtyLead time
Project Phono Box S2 Ultra Black453663In Stock for Immediate Dispatch
Project Phono Box S2 Ultra Silver453671In Stock for Immediate Dispatch

Warranty information for Project Audio:
Project Audio

Pro-Ject products are designed and manufactured to the highest quality standards. However, if something does go wrong with the product we are here to help. From your date of purchase your product is warranted against faulty materials or workmanship for a minimum period of 24 months.

For new electronics and turntables (not applicable to accessories) you can extend this guarantee to 36 months, customers must register at: (this offer of an extended warranty must be made within 4 months of date of purchase).

This guarantee applies to all Pro-Ject Products including Turntables and Turntable Accessories.Providing you with peace of mind and the assurance of premium Quality.

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