GateKeeper Docs
Power Cable:
Included with your GateKeeper is an IEC C7 Cable.
It is bipolar so it shouldn’t matter what direction you plug it in.
You don’t have to use the included cable. There are many available on line and even at your local hardware store. Standard length is about 6 feet. Some have right angles, some straight, some longer or shorter. So if your setup requires a shorter cable they are inexpensive.
We have included an inline AC switch that can be wired in at any preferred point.
**You do not need a switch if you have a power distribution system such as a Furman rack or power strip you routinely turn off and on. BUT I do not recommend leaving ANY studio equipment “Always On”. I’ve replaced many power caps over the years in home consumer and studio equipment. Truth is capacitors do have a life span. So keep your gear off when you’re not using it.
If you replace your cable and you have no inline switch you can simply unplug the cable at ether end.
***When designing The GateKeeper it was clear I needed to eliminate the power supply issue. Most tech support over the years was a result of reversed polarity damage by plugging in the wrong DC power supply. Noisy power supplies with bad filtering have been another issue. Especially with distortion circuits that will amplify the noise floor. I spent a lot of time adding filtering to make sure we have the best possible outcome.
Internal Power:

The GateKeeper runs on a +12/-12 power system just like eurorack systems do. The two blue LEDs indicate both +/- voltage are functioning correctly.
Inside is a universal power block that takes a wide range of AC voltages. The supply is able to put out a lot more power than is actually needed. This gives us a lot of headroom and stresses the supply less than if we were operating at its limits.
Acceptable voltages: 85 VAC to 305 VAC
Virtually all countries with standardized mains electricity for domestic use fall within the 85–305 VAC range:
- North America: United States (120 V, 60 Hz), Canada (120 V, 60 Hz), Mexico (127 V, 60 Hz).
- Europe: Most countries use 230 V, 50 Hz (e.g., Germany, France, UK).
- Asia: China (220 V, 50 Hz), India (230 V, 50 Hz), Japan (100 V, 50/60 Hz).
- South America: Brazil (127/220 V, 60 Hz), Argentina (220 V, 50 Hz).
- Africa: South Africa (230 V, 50 Hz), Nigeria (230 V, 50 Hz).
- Oceania: Australia (230 V, 50 Hz), New Zealand (230 V, 50 Hz).
These systems are compatible with devices designed for 85–305 VAC, assuming proper plug adapters are used for differing socket types.
As long as you have the correct IEC C7 cable with prongs match your region no other equipment is needed.