エレキギターもしくはエレキベースのピックアップから取り出される音声信号は非常に微弱なため、低品質なケーブルや仕上がりの悪いハンダ、また安価な接点部品などは、音質劣化の原因となります。この微弱信号を劣化させることなく装置間で切り替えるためには、スイッチの接点部を特殊な素材で仕上げる必要があります。すべての Lehle スイッチャーは、リレーおよびスライドスイッチに特別な金メッキ接点を採用しているため、音質劣化の一切ない確実な信号の切り替えを約束します。

楽器からの音声信号が複数のアンプに同時に送り込まれると、ハムノイズや位相の打ち消し合いが発生してしまいます。効果的な唯一の解決方法は、高性能トランスの使用です。通常のトランスですと、ピックアップ信号のような微弱な高インピーダンス信号用には作られていないため、エレキギターやエレキベースの音色自体が変化してしまいます。しかし、Lehle の LTHZ トランスは、そういった高インピーダンス信号用に開発されているため、楽器とアンプの音色を保ちつつ、不快なハムノイズを抑制します。

数多くのエフェクターにはステレオ出力が装備されています。中には、慣例的なマグネット・タイプに加えて、アコースティック・サウンド用にピエゾ・タイプのピックアップを備えた楽器もあります。このようなデュアル・チャンネル仕様のステレオ信号は、これに対応する各 Lehle 製品で問題なく操作することが可能です。ステレオ対応の Lehle 製品は、もちろんモノ操作にも対応しています。

Symmetrischer Ausgang
Dieses Gerät ist ausgestattet mit einer Standard-TRS-Buchse und liefert bei Bedarf ein symmetrisches Ausgangssignal.

LTHZ トランスを搭載しておらずこのマークの付いたすべての Lehle 製品は、金メッキ接点採用のスイッチもしくはリレーによって、信号のみでなくグラウンドも切り替えられます。そのため、複数の異なる出力を交互に切り替える際も、例え 2 台のアンプを同時にオンにせずとも、不快なハムノイズは発生しません。

• Stereo split, summing, double DI box and problem solver
• Hum-free and lossless splitting and isolating
• Two high-impedance LEHLE TRANSFORMER HZ
• Phase and ground switch per channel
• Suitable for unbalanced or balanced signals
• Passive – doesn’t need power

The LEHLE P-SPLIT STEREO combines passive intelligent splitting with the highest possible signal fidelity in a double pack.
The classic solution for splitting, eliminating hum, balancing and reamplification in recording applications, now appears in a doubled version and this time adds the passive summing of signals.
The possibilities are reaching far. Tap the full potential.
Two LEHLE TRANSFORMER HZ are working at the heart of the LEHLE P-SPLIT STEREO, galvanically isolating the particular ISO outputs from each other, eliminating any possibility of ground loops and hum.
The LEHLE TRANSFORMER HZ process both high and low impedance with uncompromising sound quality. At the ISO outputs you can pick off the signal either unbalanced or balanced –  regardless of the signal type in the rest of your rig.
Per channel there is a gold plated phase switch and ground switch. This keeps you flexible and your system safe.
A classic application is the isolation of a stereo signal, enabling you to use two amplifiers in stereo and send the stereo signal to a mixer or the audio interface of your DAW at the same time.
Another useful method for the LEHLE P-SPLIT STEREO can be as an effective hum suppressor.
If you connect two electronic devices, background noise can appear, caused by ground loops.
Here the LEHLE P-SPLIT STEREO provides a simple, but highly effective solution: whilst installed between the two units, this problem solver isolates the input from the output.
Thanks to its ability to pick off balanced signals on the ISO outputs, the LEHLE P-SPLIT STEREO is also eminently suitable for use as a high-quality compact stereo DI box for all types of active signals.
Thus you can run long cable distances in the studio or on stage, of balanced signal type and free of background noise.
According to which sockets are occupied, the LEHLE P-SPLIT STEREO also works as a passive summing box: your effects pedal board can be wired in stereo, but you output in mono if connected to only one amplifier.
If, on the other hand, you connect only one mono signal to the input, the LEHLE P-SPLIT STEREO works as a three-way split for up to three amplifiers.
Galvanically isolated, double hum free and passively intelligent splitting
Speaking of passive: the LEHLE P-SPLIT STEREO still doesn’t need a power supply.

Q: What is galvanic isolation?
A: Background noise, generated by ground loops, occurs again and again when two electronic devices are connected to each other, and the Lehle P-Split III provides a simple but extremely effective remedy when installed between the two units. The two devices are galvanically isolated when the `ISO´ output is used, eliminating this background noise.
The protective earth conductor and the ground connection of the audio signal create a loop which will pick up external interference generated, for example, by coils. Such interference will impair the signal. The Lehle LTHZ transformer included in the Lehle P-Split III galvanically isolates the ground connection. The hum loop is thus broken at this point.

Q: Does the galvanic isolation color my sound?
A: No, neither sound nor dynamics will be altered, the signal is passing the switcher without any loss in strength or frequency. We use our self-developed Lehle LTHZ transformers for this, the selection of high quality components guarantees a rich sound throughout the full frequency range.

Q: Can I use the P-Split III to eliminate the humming that my amps create when I use them simultaneously? It sometimes occurs when I use a stereo pedal to send a signal to both amps.
A: Yes, the 2 outputs are galvanically isolated, so there will be no ground loops.

Q: Can the P-Split III be used as DI box since it has 14“ sockets?
A: Yes, you get a balanced or unbalanced (mono-) signal from ISO and/or DIR output when using a stereo (TRS) cable.

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