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The C-M1.7 Adaptor Cable is designed to connect a device requiring a 1.7 mm, reverse-polarity power connection to the Power-All or other power source. It can be used with Tascam Phrase Trainers, Korg Volca models, etc.

The C-M1.7 offers the following features:

  • 1 x Female Barrel jack to connect to Power-All or other power source (C-M/M & C-BL Cable may be required to connect C-M1.7 to brick-style power supplies)
  • 1 x right-angle Male Barrel plug with 1.7 mm O.D. and tip-positive polarity to connect to pedals or other devices
  • Spring-loaded male plugs to reduce chance of disconnection
  • 26-gauge Cable with oil-resistant vinyl sheath
  • 10.5” (approx. 264 mm) Cable length between plugs
  • NEW Lo-Pro™ Plug design offers the smallest plug dimensions possible in order to save space on your pedalboard and to make connection to your pedals quick, easy and efficient

power-all low profile plug comparison


  • Female Barrel Jack (1): 5.5 mm O.D.; 2.1 mm I.D.
  • Right-Angle Male Barrel Plug (1): 4.75 mm O.D.; 1.7 mm I.D.; 9.5 mm barrel length
  • Cable: 26-gauge, OFC with oil-resistant vinyl sheath
  • 10.5” (approx. 264 mm) Cable length between plugs


  • Output polarity of C-M1.7’s Male Barrel Plug will be the opposite polarity of source connected to Female Barrel Jack (i.e. – if source is tip-negative, then C-M-1.7 output will be tip-positive)
  • Connect C-M/M Cable to C-M1.7’s Female Barrel Jack to connect to brick-style power supplies or other sources with Female Power Output Jacks
  • Connect Cable-Red to female end of C-M1.7 to reverse (flip) the output polarity of the Male Barrel plug
  • Use C-Cap to cover unused Male Barrel Plug & prevent short-circuits

*Sum of current draws of pedals used should not exceed maximum output current of Power Supply.

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