Tube Box S2

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Tube Box S2
The Tube Box S2 is a premium phono stage for both Moving Magnet (MM) and Moving Coil (MC) cartridges. In order to achieve the best sound possible, it's become Pro-Ject's first product to feature a discrete circuit design without any operational amplifiers (op-amps).

The Tube Box S2 delivers a relaxed audio performance with lush mids in a full and enveloping sound stage, just like far more expensive pure-valve phono stages are capable of. Thanks to the built-in adjustable gain, capacitance, impedance and subsonic filter settings, it's possible to tune the device to perfectly complement almost any modern MM or MC cartridge. It's also possible to tune the sound further, as the Tube Box S2 is Pro-Ject's first ever product designed for the valves to be replacable - allowing for tube rolling or sound shaping. 

The new S2 casing is a big additional asset to the design, as not only does it deliver the highest visual appeal, but it is also sturdy enough to protect the internal circuitry against unwanted interferences and vibrations, which can cause unpleasant listening experiences. The Tube Box S2 also benefits from protective cages around the valves - inspired by the superior Tube Box DS2 design

Inspired by high-end designs but available for a very appealing price, the Tube Box S2 is a real audiophile bargain.

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.

Tube Box S2

RRP: £359.00

The Tube Box S2 is a premium phono stage for both Moving Magnet (MM) and Moving Coil (MC) cartridges. In order to achieve the best sound possible, it's become Pro-Ject's first product to feature a discrete circuit design without any operational amplifiers (op-amps).

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format_quoteHenley Says...

Pro-Ject's S2 line of electronics represent almost a pick 'n Mix of solution products for entry - mid-level systems. All in compact chassis, they are designed to make as much or as little a statement as you want in your set-up. Just need streaming capability but don't want to clutter your look? Simply tuck the Stream Box S2 away out of sight. Equally, if you're looking for a neat separates layout with uniform styling and sizing, you can easily build a bespoke system tailored to requirements you have and not wasting money and effort on those that you don't.

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Dan Cottingham Marketing Coordinator

  • A phono stage takes the low-level electrical signal, generated by the pick-up cartridge on your turntable, and amplifies it to LINE level. When it's at LINE level, you can connect the outputs of your phono stage to any LINE or AUX input on your amplifier. If you do not have a phono stage, when you connect the turntable to your amplifier the signal will be very quiet, and if you turn it up to normal listening level it will sound distorted and noisy. 

    You do not need an external phono stage if...

    • There is a phono stage already built-in to your turntable (for instance with our Phono USB or RecordMaster turntables from Pro-Ject)
    • Your amplifier has a Phono input.

    In both of these cases, the built-in phono stage needs to support your pick-up cartridge (see below).

  • Yes. You need to buy a phono stage that suits your particular type of cartridge. If you have a Moving Magnet (MM) cartridge, you need an MM-compatible phono stage. If you have a Moving Coil (MC) cartridge, you need an MC-compatible phono stage. This is due to the different output levels of MM and MC cartridges (as MC cartridges are so quiet, they require more Gain).

  • Cartridges are complex micro-mechanical devices, and the way a phono stage treats the electrical signal they generate can dramatically impact the end sound quality. When setting adjustments are available, the one adjustment you always need to check, regardless of the cartridge, is Gain. The level of Gain directly affects all cartridges, as the ultimate task of a phono stage is to amplify the electrical signal.

    After Gain, the type of Settings you need to adjust are dependent on the cartridge used...

    • For Moving Magnet (MM) cartridges, you need to adjust the capacitance (measured in pF).
    • For Moving Coil (MC) cartridges, you need to adjust the Impedance (measured in Ω).

    Some phono stages have other Settings available, which are not cartridge dependent. For example...

    • Curve Selection (most phono stages are designed with RIAA equalisation in mind, but there are other options available - such as DECCA)
    • Sub-Sonic Filter (to attenuate the low-end out of a system where boom is a problem)

    For more help and advice visit our Tech Support section.

  • PDF | 1 Mb | Product Info Sheet

  • PDF | 307 Kb | User Guide

  • JPG | 26 Mb | Lifestyle Photo

  • PNG | 17 Mb | Stock Photo (Black - Front)

  • PNG | 16 Mb | Stock Photo (Rear)

  • PNG | 13 Mb | Stock Photo (Silver - Front)