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5.2.3 Life Span
Power tubes last 1 to 3 years, depending on care, volume and frequency of use of
the amplifier. If you use your amp only once a month, then the tubes will last much
longer. Really. We have heard tubes that are over 10 years old, but it was not a
good thing. Tubes age very slowly; slow enough for the artist to get used tothe
changing tone. To keep things fresh, and to keep your tube dealer in business, we
recommend re-tubing, cleaning and biasing once a year if the amp is used
frequently.
Chapter Six: Layout of Controls
6.1 Manual Channel Selection
The 2 channels of the Einstein can be selected manually by activating the select
switch for either channel. Alternatively, a foot switch can be connected to remotely
control the channel selection.
6.2 Master 2 On/Off
Master 2 can be used for all channels, and can also be remotely controlled via the
included foot switch. This allows instant volume boost, or cut, without fiddling with
the amp. Once adjusted to suit your needs for the gig, it's a thing of pure beauty. You
can select the Master 2 function via the Diezel 2-button foot switch. Actually, you can
also use a readily available single button foot switch with a 1/4"connector.
6.3 Channels
• Channel One
Control perimeters include Gain, Volume, Treble, Mid, and Bass. A 3-positiontoggle
switch selects preset gain modes.
• Channel Two
Control perimeters include Gain, Volume, Treble, Mid, and Bass. This channel can
be selected via the toggle switch, or via the Diezel 2-button foot switch.
6.4 Effects Mix control Rear panel
This control determines the amount of effect signal in the parallel loop
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