Tube Box DS2

£600.00
  • Premium valve-output phono stage
  • Minutely adjustable Impedance setting
  • Compatible with MM and MC cartridges

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DS2 Line

The Tube Box DS2 is an audiophile-grade phono pre-amplifier with a valve output stage. Taking over from the hugely successful Tube Box DS model, the DS2 expands on its predecessor’s ability both technically and aesthetically.

The sophisticated, dual-mono internal design benefits from the outstanding circuit technology developed by Dr. Sykora, and uses superlative components. Combined with the ultra-low noise specification and precise RIAA equalisation, the Tube Box DS2 is a meticulously designed device.

The Tube Box DS2 is compatible with both MM and MC cartridges, and is fully customisable for Gain and Capacitance settings, as well as boasting a continuously adjustable impedance dial – taken from the flagship Phono Box RS – that can be adjusted during playback. There is also a switchable subsonic filter, for greater room-matching abilities.

The Tube Box DS2 benefits from two selectable inputs and outputs, allowing vinyl aficionados to connect multiple turntables or tonearms to the input, and different amplifiers to the output. The Tube Box DS2 is a true vinyl lovers’ dream, allowing you to enjoy your records like never before.

Key Features:

  • Suitable for MM and MC cartridges
  • Precise RIAA equalization 
  • Ultra low noise circuitry 
  • Choice of 2 Phono inputs & 2 Line outputs
  • Dual Mono design for improved channel separation
  • Selectable input impedance (for MC: fixed or variable)
  • Selectable input capacitance (for MM)
  • Switchable Subsonic filter
  • Gold plated RCA input / output terminals
  • Aluminium / metal resistance to vibration and electromagnetic interference 

Technical Data

Tube Compliment: 2x ECC83 (12AX7)
Input Impedance:

Variable: 10Ω - 1,000Ω (MC)
Fixed: 47kΩ (MM)
Capacitance: 100, 220 or 320pF
Input Gain (MM/MC): 40, 45, 50, 60 or 65dB
Signal-to-Noise Ratio: 88dB (A-Weighted)
THD: < 0.4%
RIAA Curve Accuracy: ± 0.2dB / 20Hz - 20kHz
Subsonic Filter: 20Hz @ 18dB/Octave
Inputs: 2 x RCA Pair (Phono)
Output: 2 x RCA Pair (Line)
Outboard PSU: 18V / 1A DC
Power Consumption: 490mA DC/< 0.5W (Standby)
Dimensions: 240 x 93 x 227mm
Weight: 1.93kg

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.

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