Are you still worrying about your neighbors’ complaints when you’re rocking loud at home? Try this EMOAMP Controller! This tiny passive attenuator is designed for connecting to your amp’s FX Loop jacks: get connected, set a level and done.


Please keep this manual in a convenient place for future reference.

Power Supply

Always use a DC 9V center negative AC adapter. Use of an adapter other than that specified could damage the unit or cause malfunction and pose a safety hazard.
Always connect the AC adapter to an AC outlet that supplies the rated voltage required by the adapter.
Disconnect the AC adapter from the AC outlet when during lightning storms or not using the unit for an extended period.


Always turn off the power before connecting or disconnecting. Make sure to disconnect all cables and AC adapter before moving the unit. This will help prevent malfunction and damages.

Environment Considerations

Avoid using the unit in any of the following conditions that could cause malfunction:

  • Extremely hot or cold places
  • Under direct sunlight
  • Magnetic fields
  • Near heaters and other heat sources
  • Sandy or dusty places
  • Places that are extremely humid or exposed to splashing water
  • Places with lots of vibrations
  • Electrical Interference

    Devices that are very susceptible to interference or that emits powerful electromagnetic waves (e.g. radios and TVs) should not be placed near this unit, as interference could occur.
    Electromagnetic interference could cause malfunction and could corrupt or destroy data.
    Always operate this unit at a suitable distance from these devices.


Do not apply excessive force to the switches and other controls, exposing the unit to strong impacts, which could cause it to break.
Do not put foreign objects or liquids into the unit.
Never open the case or attempt to modify the product in any way since this can result in damage to the unit.
Clean only with a soft, dry cloth.


Rock Out At Low Volume The EMO-AMP Controller is a passive attenuator designed for using with your amp’s FX Loop jacks (better settle it in a serial FX loop). When you need to rock out at low volume, this will be a great help. But remember: do not set it between your amp and cabinet.

No Power Supply Needed

You don’t need an extra power supply for the tiny unit: connect to your amp’s FX Loop jacks, set a level and done – or tap the footswitch to immediately turn the out level to minimum. The power jack is for supplying LED onboard only.

True Bypass

The EMO-AMP Controller features true bypass design which keeps your sound pristine.

Carefully Selected Components

The EMO-AMP Controller is designed and built with carefully selected components to ensure best sound quality and road performance. The solid Aluminum-alloy chassis ensures using reliability.


  • Convenient compact size
  • Easy-to-use passive attenuator
  • True bypass
  • LED indicator shows working state
  • Set output level to minimum immediately by tapping MINIMUM footswitch


Power Requirement: 9V DC center
Current Consumption: 10mA
Dimensions: 42×93.5x52mm
Weight: 220g

Connections & Controls


Note: This Owner's Manual is adapted from the official manual created by Donner in PDF format, without modification of the content. We just rewrite the PDF, into responsive mobile friendly pages.So, you can read this document anytime and anywhere.

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