Aesthetix Io - Manual (Page 3)

CONFIGURATION
THE FOLLOWING PROCEDURES SHOULD ONLY BE ATTEMPTED
WITH THE POWER CORD DISCONNECTED.
INPUT IMPEDANCE:
Note: If 47K ohms is the desired input impedance, the unit comes factory configured for this
setting. The following instructions may be skipped.
The input impedance of Io may be configured to virtually any useful value. On the back panel of
the main unit, locate the section labeled “INPUT IMPEDANCE”. Two jumpers (and a spare) are
supplied with Io, one for the left channel and one for the right. Locate the desired input
impedance and its corresponding jumper position in the following table:
IMPEDANCE
JUMPER POSITION
10K 10
4.75K 9
1K 8
475 7
243 6
121 5
75 4
40.2 3
20 2
10 1
Orient the supplied jumper vertically and insert onto protruding pins below the desired position
number (use needle-nose pliers). Do the same for the remaining channel. If an intermediate not
listed value of input impedance is desired, please contact the factory. Virtually any value is
easily attainable.
The correct loading will be achieved when music has the right balance of dynamics, high
frequency extension and lack of glare or brightness. Generally speaking, less loading (higher
ohms) results in more high frequencies and more dynamics but can be too bright with some
cartridges. More loading (lower ohms) can reduce brightness but if overdone can result in
reduced dynamics and a dull, lifeless quality. Consult your dealer for loading recommendations
on the cartridge(s) you are using. One way is to start by setting the Io’s impedance to 10 times
that of the cartridge, then listening and making minor adjustments to achieve the right balance of
dynamics, high frequency extension and lack of glare or brightness.
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