Tube Box DS

£399.00
  • Improved valve version of the Phono Box DS
  • Minutely adjustable Impedance setting
  • Compatible with MM and MC cartridges

Quantity
Options
Find Your Local Retailer

How To Buy

As UK distributors for the brands we represent, our main focus is to give you all the information you need to help assist with your purchase. Once you have the information you need, we want to make the purchase process as simple as possible. So we give you up-to three options on how to buy our products.

Find Your Local Retailer

Our preferred option is for you to visit a nearby store and buy what you need locally. Our authorised stockists are some of the finest specialist hi-fi retailers in the country, and they're equipped to give you the best after-sales and set-up advice possible - all in person. To find your local retailer, either click the 'Buy In-Store' button on your product page for exactly the right recommendation, or head to our comprehensive Where To Buy tool.

Buy Now, Collect Locally

If you want the added convenience of only having to pop-in to store when you know the product you want has arrived, you can use our Click & Collect-style checkout process. With Buy Now, Collect Locally, your purchase takes place online and the product is then delivered direct to your local supporting retailer; ready for you to collect when you're ready. Click here to find out more about Buy Now, Collect Locally.

Buy Now

For smaller items, you can also have the ultimate convenience of purchasing directly through our website. The checkout process is entirely secure, so you can trust your information will be safe - and your desired product will arrive with you as quickly as possible.

Click here for full Terms & Conditions.

DS-Line

The Pro-Ject Tube Box DS is a valve-output phono pre-amplifier that offers improved performance over the original Tube Box S/E II, whilst maintaining an appealing price.

The Tube Box DS presents an impressive sound, making it a great audiophile upgrade for almost any mid-priced analogue hi-fi system. With a high-quality variable impedance dial and a switchable Sub-Sonic Filter, it can meet the needs of almost any MM or MC phono cartridge on the market. The carefully selected audiophile-grade components make it possible to enjoy your valuable vinyl collection like never before.

For cartridge matching, there is an extensive list of settings adjustment available. On top of the usual Gain and Capacitance adjustments, the Tube Box DS boasts a fully adjustable dial for attenuating the Input Impedance. This allows for perfect matching with almost any Moving Coil cartridge on the market, and it can even be adjusted during playback to tailor the sound perfectly to your preference.

The class-leading music reproduction qualities of the Tube Box DS deliver pure dynamics, full transparency, analogue warmth, bass texture, detail resolution and purity across all audible frequencies. All-in, it effectively brings a retro ethic to modern phono electronics.

Key Features:

  • MM/MC switches on rear panel 
  • Unique continuously variable input impedance loading 
  • Precise RIAA equalisation
  • Switchable Gain settings for MM and MC cartridges 
  • Capacitance switch for MM cartridges 
  • Switchable Sub-Sonic Filter 
  • Dual-mono tube triode architeture 
  • Premium ECC-83 Golden Pin Tubes 
  • Ultra-low-noise semiconductors 
  • SMD technology

Technical Data

Valve Complement: 2x ECC83 (12AX 7A)
Input Impedance Settings: MM: 47kΩ
MC: 10Ω to 1KΩ (Adjustable)
Capacitance Settings: 47pF, 147pF, 267pF or 367pF
Gain Settings: 40dB, 50dB or 60dB
Noise Floor: 93dB (A Weighted) (41dB Gain)
THD: MM: <0.1%
RIAA Accuracy: 20Hz - 20kHz / max. 0.5dB
Subsonic Filter: -18dB at 20Hz
Input: 1x Pair RCA / Phono Sockets
Line-Level Output: 1x Pair RCA / Phono Sockets
Power Consumption: 470mA DC
Outboard PSU: 18V / 1,000mA DC (UK Plug)
Dimensions: 103 x 72 x 144mm
103 x 72 x 156mm (Incl. Sockets)
Weight: 1100g

FAQ

What is a Phono Stage?

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).


Do I need a specific type of Phono Stage?

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).


What do all of the Setting adjustments mean?

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

Note: We’re constantly updating our website to ensure all our listings are as accurate as possible. However, the images and text on this page can be subject to change without notice, and errors and omissions are expected.

If you have any questions, please contact us.
Product Reviews

Many of our products are firm favourites with the global hi-fi press, and this one is no exception. Check out the coveted awards and/or reviews this great product has received. To find out more click the icons below.


Click here to see all the reviews for this product.