Whest Audio MSU-20 Owners manual

Operating manual

PS.20 + MsU.20

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PS.20 by whest audio ltd

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MSU IN

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INPUT

OUTPUT

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Z. LOADING

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Contents

Description
Safety
Cleaning
Connections
Specification
Fig.1 PhonoStage.20 rear
Fig.2 MsU.20 rear
Fig.3 Basic connection
Fig.4 Grounding arrangements

Description

Thank you for purchasing the Whest Audio Ltd PhonoStage.20.

As you know, this unit is designed to retrieve the maximum amount of information from your vinyl
LPs. It does this by using proprietary low noise audio circuitry as well as a newly developed filter
which together with the RIAA filter enables the PhonoStage.20 to playback up to 60Khz.

BRIEF HISTORY

The RIAA curve was designed many years ago to enable the use of vinyl as a playback medium.
Back then the humble stylus and audio electronics could really only playback a very limited
bandwidth. A system bandwidth of 12Khz was quite rare. Nowadays most systems have a
bandwidth of 100Khz! The modern day cartridge can playback 60Khz. So why continue with a
filter curve designed for systems designed in the 1950s?

FORWARD THINKING

Because of our close links with the music recording industry we were able to measure several
Neumann cutter heads prior to cutting a master onto acetate. What we found was that the cutter
head would cut high frequency all the way to 50Khz!

With these results and the research acquired from the DAP programme we then designed a hf filter
that would complement the RIAA filter we had designed for the PhonoStage.20. Because of the
extended hf response of the PhonoStage.20 large amounts of information are now able to be heard
when it was once thought there was nothing there.

The extended hf enables you to hear further into the soundstage by bringing to life the lowest
frequencies of a kick drum and positioning all instruments to form a three dimensional soundstage.

It is because of the extended hf response that the PhonoStage.20 excels where others just plainly
fail.

Safety

Please note that there are no user serviceable parts inside.

If for any reason this unit needs to be serviced please return it to an authorised Whest Audio Ltd
service agent.

There is a risk of electrical shock if this unit is opened!

Please do not attempt to open this unit as it WILL invalidate your guarantee.

Cleaning

When cleaning the unit please do not use any liquids as it may enter the unit causing it to
malfunction. We recommend a lint free cloth with a small amount of polish applied to the cloth.