The LEHLE P-ISO combines passive isolation with the highest possible signal fidelity. Its applications range from isolation and eliminating hum, to balancing and reamplification along with any signal routing that requires a clean signal free from noise.
At its core is the high-end LEHLE TRANSFORMER HZ, which galvanically isolates the signal, eliminating any possibility of ground loops. The LEHLE TRANSFORMER HZ was specially designed for use with high-impedance signals but also processes low-impedance signals with uncompromising sound quality.
The classic application for the LEHLE P-ISO is as a hum suppressor. Frequently background noise caused by ground loops occurs when two electronic devices are connected to each other.
The LEHLE P-ISO provides a simple, but extremely effective remedy when installed between the two units. Using the ISO output, the devices are galvanically isolated and background noise becomes a thing of the past.
By using two amplifiers, driven by one stereo effects device, the LEHLE P-ISO can successfully isolate one amplifier from the other.
Thanks to its ability to pick off an unbalanced or balanced signal on the ISO output, the LEHLE P-ISO is also eminently suitable as a reamplification device or as a high-quality compact DI box for all signal types.
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.
- Weight: 0.21kg
- Dimensions: 72 x 41 x 31mm (i.e. tiny!)
- Max. level: +20 dBu (THD < 1%, 50 Hz - 20 kHz)
- Total harmonic distortion: 0.003 % (0 dBu, 1 kHz)
- Frequency range: 20 Hz – 100 kHz -0.1/ +0.4 dB (source 600 Ω, load 1 MΩ)
- Input impedance (transformer impedance load): min. 2 MΩ at 2 kHz