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Chapter Four: Two Pre-Amplifiers
4.1 Pre-Amplifiers and their Jobs
The Diezel Einstein comes equipped with 2 different and totally
independentpreamps. This allows the artist to play through nearly all musical-
styles withouthaving to make major changes to his/her amplifier. The preamps
are voiced todeliver the most wanted guitar tone flavors: Clean, Crunch,
Heavy, Lead. Thisdesign concept delivers stellar guitar sounds with excellent
playability, warmdynamics and razor sharp equalization possibilities. The tone
controls work in anunusually wide range, so a little adjustment does quite a
lot. As with so manythings, less is often more.We suggest you start exploring
the channels with all controls set to 12:00 o'clock,and the master volume just
slightly cracked open. (To avoid hearing damage)
4.1.1 Channel One (low to medium gain)
Clean Tone is a very sensitive subject, because there are so many different
ideason how a clean amp should sound like. Clean tonal textures require
much higherdynamic range than distorted sounds. From hard and percussive
sounds to soft,warm, and blossoming tone. Einstein was designed to offer as
many of the cleanvarieties as possible. Your choice of guitars and pickups will
have a large part inthis equation.
Channel one has three modes, selectable by a toggle switch near the channel
onegain knob. The modes pre-select different gain stages in the pre-amp,
allowingthis channel to span the range from extreme clean to a heavy crunch.
A player thatdoes not require a clean channel can use these modes for
alternate distortionsounds.
4.1.2 Channel Two (high gain)
This channel is voiced for single notes, or for very heavy and massive
rhythmguitar. Due to its slight midrange accent and very high gain, it
possesses a goodpunch, will play with ease, and gain authority to rule any
stage, or studio. The"less is often more" rule applies here also.
4.2 Pre-amplifier Tubes
The pre-amps are equipped with 12AX7 tubes in all positions. The pre-amp
tubesare not designed to produce high power output. Therefore, their life
expectancy ismuch higher than that of the power amplifier tubes.This is not to
undermine their utter importance in overall sound and response ofthe
amplifier. Also, annoying defects like crackling noises and low dynamics
aredirectly related to defective pre-amp tubes. Like all other tubes, 12AX7
tubescome in many different gain stages, and offer a wide variety of tonal
behavior.Our choice for production was made to ensure a wide variety of
tones, with lownoise and good reliability.
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