Aesthetix IO Owners manual

Io with Volume Control

PHONO STAGE

OWNER'S MANUAL

Aesthetix Audio Corporation

5144 N. Commerce Ave. Suite A ♦ Moorpark, Ca. 93021

Phone: [phone] ♦ Fax: [phone]

INTRODUCTION

Thank you for purchasing the Io Phono Stage. It has been engineered to
deliver the highest attainable sound quality from your turntable. This is its
sole purpose. Only the highest grade electronic components are used in the
Io, including: non-inductive wirewound resistors in the signal path;
polystyrene, polypropylene, and Nichicon electrolytic power supply, bypass,
and signal capacitors; low noise matched vacuum tubes; glass epoxy dual
mono circuit boards; 20 gauge steel chassis; custom wound low flux power
transformers.

PLACEMENT

The Io main unit should be located away from possible sources of hum such
as power cords, power transformers and the like. It should not be located on
top of its own power supply or any other heat source such as a power
amplifier. It must be kept well ventilated any time it is on. If it is positioned
within an enclosed space then fans may be warranted. All air vents must
remain unobstructed. The power supply is the main source of heat and
should therefore be positioned for adequate ventilation and away from the
main unit, if possible. Placement of the power supply immediately below
the main unit reduces the tube life of Io's tubes.

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.

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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.

Gain: Gain is adjusted using the front panel volume controls. No internal
gain adjustment is available on units with volume controls.

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