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Chapter Two: Using Your Einstein
2.1 Mains Connections, Power and Standby
2.1.1 Mains/Connection to Power Outlet
Please make sure that both switches (Power and Standby) are in the off
positionbefore connecting to the mains circuit. Verify line voltage before
connecting thepower cord. Never start Einstein without connecting speakers
to the properterminals. (See 3.2.5)
2.1.2 Power up, Warm up, Standby off
First, turn the Power switch to on (facing up). The indicator light will turn
on.This starts the tube heating process. After about 40 seconds, the tubes
should besufficiently heated for normal operation. Your Einstein is then ready
for operationand the standby switch can be turned to "run" (also facing up).
Prematureactivation of the standby switch will lead to unnecessary tube stress
andsubsequent reduction of the power tube's life span.
2.1.3 Power Tube Caution
Tubes are electronic components that function only with vacuum intact and
undervery high operating temperatures. Each tube has one or more heating
filaments,much like a light bulb. These filaments heat up the anode of the
tube. If youswitch the standby switch to the "run" position before these
anodes have reachedtheir operating temperature (when the anode surfaces
are not heated evenly), thiscauses undue stress to the tubes and their related
components inside the amp.Always give the amp its much needed warm-up
time, even if musical inspirationhits you with a full force.
2.1.4 Operating Temperature
It will take a little more time after warm-up until everything inside the amp
isworking in sync and to its fullest potential. A trained ear will notice a
slightlywarmer tone and better complexity in tone after playing the amp for a
short while.It's like stretching before exercising.
2.1.5 Power Tube Life
The power tubes of your amplifier are subjected to a certain aging process.
Oncesigns of aging, such as unreliability or unusual noise, are detected, we
suggest thatyou replace all power tubes at once. Matched tube sets age
relatively evenly, soour experience suggests. This means that if one goes, the
others are not far frommeeting the same fate.The aging process manifests
itself by a depletion of a thin layer of wolfram on theanodes. This can take
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