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Figure 1: Bias plate on the right side of amplifier
SERVICE
1) Replacement Parts
When replacement parts are required, be sure that the service technician uses
replacement parts specified by the manufacturer or parts with the same characteristics as the original
part. Unauthorized substitutions may result in fire, electrical shock or other hazards.
2) Tube Replacement
Should it become necessary to replace your tubes, remove the AC power plug from
the wall and allow thirty minutes for the high voltage capacitors to discharge. Follow instructions outlined in this
manual.
3) Modifications
– Modifications to the amplifier are strongly discouraged. The unit was designed by
experienced engineers and tested for safe and reliable operation. Any modification may pose a safety problem
and result in reduced lifetime of the product. Any removal of the cover will void the warranty.
Getting Started
About Your Amplifier
Your
EOS
amplifier was designed to provide a significant value based on a high performance to price ratio that
will exceed the sonic quality of good solid state amplifiers with its musical accuracy.
The
EOS
uses four Tungsol KT120 power output tubes , two 6N6PEV drive tubes and two 5687 input
tubes.The
EOS
is designed to work in a PushPull class A.. Parts are carefully chosen for the optimum sound
quality and the overall circuit layout is maximized for sonic purity.
Handling Vacuum Tubes
Many people have never had experience handling vacuum tubes. The process is very similar to handling
incandescent light bulbs. As with light bulbs, you should not touch a vacuum tube when it is operating since you
can burn yourself. Similarly, if a tube is dropped on a hard surface it will break. When replacing the tubes allow
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