Phono Box RS

£699.00
  • MM / MC phono stage with extensive settings
  • Premium design for audiophile performance
  • Selectable RIAA or DECCA equalisation

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How To Buy

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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.

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RS-Line

The Phono Box RS is an ultra-low noise and distortion-free phono pre-amplifier for Moving Magnet (MM) and Moving Coil (MC) cartridges, made with the sophisticated audiophile in mind. The result is a device that not only offers a breath-taking performance, but is also extensively adjustable to work with any type of pick-up cartridge.

Internally, the Phono Box RS uses only the finest available components throughout in dual-mono configuration - like the SSM2019 pre-amplifier module from Analog Devices on the input stages, and Linear Technology's LT1010 as a high current buffer stage - which allows for a very clean sound, free of unwanted noise. The Phono Box RS is then connected into a system via either RCA or XLR connectors, making it one of the most affordable high-end balanced phono stages on the market. Due to the very low output impedance of the phono stage, it is easy to pair with a wide variety of quality cables.

For cartridge matching, there is an extensive list of settings adjustment available. On top of the usual Gain and Capacitance adjustments, the Phono Box RS boasts a fully adjustable dial for attenuating the Input Impedance. This allows for perfect matching with any Moving Coil cartridge on the market, and it can even be adjusted during playback to tailor the sound perfectly to your preference. To further suit individual tastes, there is also an option to choose between fully-passive RIAA or DECCA equalisation curves.

With the Phono Box RS, vinyl playback will never have sounded as clear, detailed and smooth than with this superlative phono stage.

Key Features:

  • MM and MC compatible phono stage
  • Fully balanced dual-mono design
  • Fully passive RIAA equalization & DECCA settings available
  • Continuously variable input impedance setting
  • Impedance dial can be adjusted during playback
  • RCA / XLR In & Out
  • Superior low-noise and low-distortion circuitry
  • Elegant dip switch controls on the front panel
  • Metal casing protects against vibration and interference
  • Available with silver or black casework

Technical Data

Input Impedance Settings:

Fixed: 10Ω or 47kΩ
Variable: 10 - 1,200Ω
Capacitance Settings: 100pF, 200pF, 300pF, 420pF, 520pF
Output Impedance: 50Ω
Gain Settings:

RCA: 40dB, 43dB, 60dB
XLR: 46dB, 56dB, 66dB
Signal-to-Noise Ratio: -80dB (91dB - A Weighted)
THD: 0.019%
RIAA Accuracy: Within 0.3dB (20Hz - 20kHz)
Subsonic: 20Hz / 12dB Per Octave
Inputs: RCA & XLR
Outputs: RCA & XLR
Power Consumption: 150mA DC / <1W (Standby)
Dimensions:

206 x 72 x 200mm
206 x 72 x 210mm (Incl. Sockets)
Weight: 2kg

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.
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