Palmer PLI-02
2-Channel Isolating Transformer in Cast Aluminium HousingIsolating transformers / line isolation boxes are used between line-operated devices to prevent ground loops that cause hum. However, they can also be used for the conversion of unbalanced to balanc

Latest User Reviews
Greatly reduces Ground Loop noise.
For anyone looking for fixing ground loop problems relating to Laptop Charging / Conencting external monitor, This work lovely. Although it doesnt completely eliminate the effect, it greatly reduces it.
Groundloop solved
I had ground loop problems with my active studio monitors and the PLI-02 provided a satisfactory fix. Does the job without needing a power supply, sits unobtrusively in a corner. No noticable loss of volume either, which is nice. Perhaps on the pricey side and there may be cheaper options, hence overall 4 stars
Technical Data
- Manufactured by Palmer
- Released in 2004
- Average price : $189
- 2 Channel isolating transformers in cast aluminum casing, per channel:
- Input: XLR / f-jack combo socket
- Output: XLR / m
- Transmission ratio: 1: 1
- Nominal level: 0 db
- Maximum level: 20 dB
- Nominal impedance input / output: 600 ohms
- Ground Lift switch for both channels
- 5 Year warranty
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