Introduction - Lehle Parallel M Operating Instructions Manual

The Lehle Parallel M is a compact and versatile
line mixer to meet demanding tonal standards.
The Lehle Parallel M mixes the signals from
effect units into the original signal, either before
the amp or inserted into its effects loop. Send
and return levels, as well as the mix ratio to the
original signal can be adjusted separately using
the respective controller. The send and return
paths can, of course, be operated both balanced
and unbalanced. The great dynamic range of
the Lehle Parallel M makes it possible to mix
into the guitar signal a 19" studio effect with its
low-impedance line level, for example, or to insert
effects pedals level-adjusted via the amp's effects
loop.
Thanks to their JFET technology, the Lehle Par-
allel M's inputs can handle both high-impedance
signals from electric guitars and basses or acoustic
instruments, and low-impedance signals from
2
keyboards and active electric guitars and basses
with a broad output range extending from 20 to
100,000 Hz.
To exploit the dynamics of tube amplifiers to the
full, the input voltage is rectified from the power
supply socket, then filtered, stabilized and doubled
to 18V.
The Lehle Parallel is available in two versions,
the Parallel L, featuring a True-Bypass switch
with gold-plated contacts, and the Parallel M, a
straight mixer.