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ALM Busy Circuits ALM019 HPO Headphone Output

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The ‘HPO’ is an affordable super slim and skiff friendly no frills stereo headphone driver output for your modular synthesiser. Includes a volume control and ability to double up a mono signal into stereo. A great use for that left over 2hp in a skiff or larger system.

Give loved ones, friends and acquaintances a break from your musical ‘genius’, the HPO offers a solitary cell for focused creativity impregnable from undeserving non believers.


  • Optional dual channel inputs
  • 3.5mm stereo jack output
  • Volume control
  • Low noise, good sounding
  • Skiff friendly depth

Technical Specifications

Power: +12v/5ma -12v/5ma
Size: 2HP
Depth: 38mm

The ALM Busy Circuits ALM019 HPO Headphone Output is used in this video:

_hp 2