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Kronos AV
Kronos AV
Pro-Ject Audio Systems
Pro-Ject Audio Systems are widely recognised as one of the finest turntable manufacturers in the world. Their mission is simply to produce the best sounding stereo analogue components at the most competitive prices possible. The current series spans a wide range of price points, with a variety of products targeted to key demographics or to accommodate the modern listener’s unique requirements.
In 2016, Pro-Ject marked their 25th anniversary year with the release of a turntable that combined traditional styling with modern technology; showing their innate ability to keep turntables fresh and interesting at a time when popularity of the vinyl format was at a previously unprecedented level. The Classic proudly sits in the middle of a multi-award winning range of turntables that manage to combine sound performance with the latest technologies and unrivalled style at every level.
Pro-Ject are also obsessed with the importance of stereo playback systems. With modern audio systems often bringing speakers either very close together or into a single enclosure, the real impact and importance of true hi-fi stereo is being lost. That’s why everything Pro-Ject create is made with pure stereo applications in mind; bringing back the true emotional importance of music to audio enthusiasts around the world.
Based in Vienna, Austria, all Pro-Ject Audio Systems turntables are made by a highly skilled workforce with great skill, care and attention in their central-European factory.

Pro-Ject Optical Box E Phono
Free Gift

  • Sale
  • Regular price £99.00
  • Available Worldwide Shipping

Inspired by the Essential III Digital turntable, the Optical Box E Phono from Box Design by Pro-Ject Audio Systems gives digital audio enthusiasts a phono stage that can integrate a turntable into their audio system via optical transmission.

With the ever-increasing presence of soundbars, and the ongoing rise in the popularity of digital audio systems, there are many people in the market who may be interested in the vinyl revival but will struggle to integrate a turntable into their existing audio system. The Optical Box E Phono is an advanced MM-compatible phono stage with precise RIAA equalisation, based on the coveted Phono Box E design, including gold-plated RCA inputs and a Line level 3.5mm jack output. However, the addition of a high-quality (24-bit / 96kHz) optical output allows for easy integration into a digital audio system.

The Optical Box E Phono plays through the analogue and digital outputs simultaneously, and the inclusion of an additional Line level input allows this small-but-clever box to act as an input extender for any hi-fi system. The stylish housing - available in black or white - is also shielded with a metal interior, which protects the unit against vibrations and radio frequency interferences.

The Optical Box E Phono is the perfect partner for all audio enthusiasts who want to add analogue sources to their digital audio system.

  • Bring vinyl playback to any digital audio system
  • Ideal for use with soundbars or DAC-based hi-f systems
  • Additional analogue output plays at same time as digital output
  • Additional Line level input
  • Functions as an input extender (connect two sources to one system)
  • Functions as an output splitter (connect one source to two systems)
  • Phono stage for MM cartridges
  • Precise RIAA equalisation
  • Gold-plated RCA inputs
  • Outboard power supply included
  • Available in black or white finish
Phono Gain: 43dB (for MM cartridges) 
Phono Input Impedance: 47kΩ
Phono Input Capacitance: 100pF

1 x RCA (pair)
1 x 3.5mm Jack

1 x Toslink
1 x 3.5mm Jack
Noise Floor: 88dB (A-weighted)
THD:  < 0.04%
RIAA Equalisation Accuracy: 20Hz - 20kHz / max. 0.5dB
Outboard Power Supply: 18V / 500mA DC
Power Consumption: 100mA DC
Dimensions (W x H x D): 120 x 32 x 106mm
Weight: 250g (without PSU)

We are still delivering orders as normal. When your order ships you will still receive tracking details. For UK shipments, Our couriers have procedures in place to ensure deliveries are arriving as quickly & safely as possible. Drivers can now sign for your parcels, however will notify you that they have arrived, in order to ensure you receive your parcel. Signing for the parcel has now been stopped temporally for hygiene reasons. Drivers are also working with customer instructions, so you can ask them to leave the parcel in a safe place (doorstep etc...) if you prefer not to come into direct contact with the driver.

There has been no changes to deliveries with Brexit. All deliveries to the UK mainland, Northern Ireland and the Republic of Ireland are operating as normal. No VAT or charges are applicable. 

Express Deliveries

Express Delivery is FREE on all orders over £50. Express Delivery offers delivery in 24-72 hours from time of purchase. We use premium couriers for this service, mainly DPD & Royal Mail. DPD will offer you a one hour window for delivery to make sure someone is at home, or you can reschedule the delivery if no one is around. 

Standard Deliveries

Here at Kronos AV, we have vast experience with e-commerce sales. Making sure that your parcel arrives undamaged is a huge priority for us. That’s why at Kronos AV, we only use premium couriers for all our orders. All our parcels are shipped with DPD or Royal Mail and are always sent Signed For to make sure it gets to the right person. 

If for any reason your parcel does arrived damaged, please get in touch, and we will be happy to get everything resolved for you. We are always on hand to help!


Delivery is FREE on all orders over £50. In order to offer FREE delivery to UK customers, we use several premium couriers to ensure your delivery arrives safe.

Most large orders (over 2kg) ship using DPD or DHL courier and smaller orders (under 2kg) by Royal Mail signed for services.

The most appropriate courier will be chosen for the items ordered to ensure the quickest possible delivery.

We can offer very generous trade in offers across the majority of our product range. 

Why not ask and see how much you HiFi is worth!

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If you have any question, please feel free to call us on 03435236169 or email