Diago PS09 Noise Isolator Adaptor Cable

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The Diago PS09 Noise Isolator quiets your signal chain by isolating your single noisy pedal. You might have come across a pedal that sounds perfect when powered on its own power supply, or with a battery, but is extremely noisy when powered alongside other pedals. This is a fairly common problem amongst modern digital pedals 

Many digital pedals have separate power and signal grounds in order to prevent noise from the digital micro-controller entering your signal path. In most analogue pedals, however, the power and signal grounds are shared. When a digital pedal and an analog pedal are fed from the same power supply, noise generated by the digital pedal is transferred to the signal through the common ground in the analog pedal.

This isn't a particularly complex problem and is easily fixable by the manufacturers of digital pedals. In fact we don't really know why they haven't tackled it more urgently. Until they do though, a Diago Isolator will keep your signal clear from the noise of those pesky digital boxes.

Some known noisy pedals:

  • Line 6 Tonecore Series
  • Strymon Pedals Compact Pedals (exl. TimeLine) Listed as 250mA, but they reportedly work with the Isolator, so they must actually draw less than 110mA!


  • Input: 2.1 Center Negative
  • Output: 2.1mm  Center Negative 110mA max


Brand: Diago
Weight: 0.2 lb
Diago PS09 Noise Isolator Adaptor Cable has a rating of 4.5 stars based on 4 reviews.

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