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?
