LEHLE P-ISO
- Isolator and DI box
- Absolutely no signal loss or hum
- High-impedance LEHLE TRANSFORMER HZ
- Suitable for balanced or unbalanced signals
- Passive – no need for a power supply
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. And just in case you are looking for a power connection: the LEHLE P-ISO performs all its functions without any need for a power supply. And due to its optimised size and low weight, it fits easily below your pedalboard or in any pocket.
| Weight | 206 g |
|---|---|
| Length | 71.5 mm / 2.8" |
| Width | 41 mm / 1.6" |
| Overall height | 31 mm / 1.2" |
| Frequency range | 20 Hz – 100 kHz -0.1/ +0.4 dB (source 600 Ω, load 1 MΩ) |
| Total harmonic distortion | 0.003 % (0 dBu, 1 kHz) |
| Input impedance (transformer load impedance) | min. 2 MΩ at 2 kHz |
| Max. level | 7.7 V RMS / 20 dBu (THD < 1%, 50Hz - 20 kHz) |
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 TRANSFORMER HZ transformer included in the LEHLE P-ISO galvanically isolates the ground connection. The hum loop is thus broken at this point.
