Lehle P-Split II Operating Instructions Manual page 7

High-impedance signal sources and inputs:
Passive magnetic pickups as generally used, in the
form of single-coil and humbucker pickups, on
electric guitars and basses, supply such high-im-
pedance signals. High-impedance signals have an
output impedance in a range of 10 kΩ (10,000 Ω);
the higher this figure, the more sensitive the signal
is to interference.
High-impedance inputs are found on guitar and
bass amplifiers, and on sound cards with a "Hi-Z"
input; "Z" stands here for the impedance, which is
the physical expression for the internal resistance
of a signal source or a signal input, and thus
defines its low/high-impedance performance.
High-impedance signals are generally transmit-
ted unbalanced and are relatively susceptible to
interference. Long cable routings audibly attenuate
high frequencies. Electromagnetic interference
from the environment then becomes more notice-
able than in the case of low-impedance and bal-
anced signals. There are, nonetheless, very many
musicians who swear by the sound of an electric
guitar or bass with passive pickups connected
directly to a tube amplifier via a good cable.
The input impedance of high-impedance inputs
is generally 1 MΩ (1,000,000 Ω) or more. Here,
too, the input becomes the more sensitive, the
higher this figure is.
Low-impedance signal sources and inputs:
Keyboards, active pickups, preamp outputs, sound
cards and mixers supply low-impedance signals.
The output impedance of such signals is typically
100 Ω to around 600 Ω.
Low-impedance inputs predominate in the line in-
put of mixing desks, power amps and sound cards
with no Hi-Z inputs, and also in microphone inputs
and in virtually all balanced inputs. Low-impedance
inputs have input impedances of around 600 Ω to
10 kΩ.
What is possible:
The Lehle P-Split II can be used to split the
signal from an electric guitar or electric bass with
passive magnetic pickups to two amplifiers, each
of which has high-impedance inputs. Please use
the shortest, best-quality possible cables for this
purpose. You will hear the 100% original signal on
both amps.
Instead of an amplifier, you can also split the
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