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RE: The KX-R does not work like this-Accuphase

Lucy decided to provide us the following comments:

Passive preamps are sub-optimal.

Plain pots really don't like to have their wipers loaded. It causes distortion. The capacitance of a cable accounts, too. It requires current to charge when a signal is applied. Wipers distort when they are asked to provide current.

Those Vishay foil resistors actually have measurable flaws. Forget about the Placette.

http://www.ap.com/download/file/747

Transformer based units have the usual transformer limitations.

Plus... A good preamp also provides some manner of common mode rejection.
Certainly all the Ayre units do. Think that matters?

Finally... An AX-5 is basically an econo version of my KX-R preamp, but with larger resistors in the volume control to give it voltage gain. Obviously, the output buffer of the KX-R is WAY heftier, as is the power supply.





Edits: 11/18/14 11/18/14

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