
OPERATING INSTRUCTIONS
LEHLE P-ISO
LEHLE P-ISO#
Dear Musician!
Thank you for purchasing your LEHLE P-ISO!
I have been building units that switch, split and route signals with no technical compromises and with maximum musical fidelity since 1999. With the LEHLE P-ISO, you have purchased a product in which only the best components are used. Every assembly of your LEHLE P-ISO has been made and tested in Germany.
Your LEHLE P-ISO is of extremely robust design and construction, to make sure that you get absolutely years and years of enjoyment from it. If you should nonetheless have a problem, or simply a question, just mail me or a member of the Lehle team at: support@lehle.com

I wish you the very greatest pleasure and success using your LEHLE P-ISO!

Signal Line Types#
General Description#
1. INPUT SOCKET
Connect the output from an effects unit, keyboard or DAW here.
The input signal is fed into this socket. The LEHLE P-ISO operates entirely passively. The input signal remains connected to the ISO output at all times, with no semiconductors or any other active components in the signal path.
The signal can be either balanced or unbalanced, since the LEHLE TRANSFORMER HZ is capable of handling both types.
2. ISO OUTPUT
Connect your amp or the audio input of a DAW or a mixer here.
The ISO output has an input signal which is isolated by means of the LEHLE TRANSFORMER HZ. A balanced or an unbalanced signal is possible, irrespective of the type of signal fed from the input.
Phase Flip#
The advantages of the LEHLE P-ISO are its compact dimensions, uncomplicated usage and high-quality attributes.
If you’re used to using the LEHLE P-SPLIT III, you might be looking around for the appropriate switch on the LEHLE P-ISO when you need to flip the phase.
But no worries: you will be able to flip the phase at the LEHLE P-ISO with no switch at all.
All you need is a TRS jack you have soldered onto a cable.
You can use this cable at the input socket (1) or at the ISO output (2) so that the LEHLE TRANSFORMER HZ will flip the phase for you.
This is how the modified cable looks like.

Typical Uses: LEHLE P-ISO ...#
Signal Flow Diagram#
