Power Supply
USB Power Requirements
The Haloplane is powered via a USB-C connection and draws up to 800 mA at 5 V during normal operation (current draw depends on the Haloplane's field contents and will be lower in many cases).
Use a USB power source capable of supplying at least this current for reliable operation. Most modern USB power sources, including USB ports on computers, should be able to supply this current.
Using a Power Bank
The Haloplane is perfectly happy being powered by a USB battery power bank.
Typical runtimes based on your power bank are as follows:
| Capacity | Duration |
|---|---|
| 5,000 mAh | 4–5 hours |
| 10,000 mAh | 8–10 hours |
| 20,000 mAh | 16–18 hours |
Noise Interference on the Haloplane
The Haloplane is designed with good overall noise performance. While it is not intended as an ultra-low-noise audiophile instrument, it provides excellent performance in typical studio and live situations when used with a suitable power supply and sensible system grounding.
Balanced Modes
Two balanced connection options are available on the Haloplane and can reduce unwanted system noise. Both result in a mono signal.
Mono Mode:
Internally, the signal path operates as a balanced connection, providing the best noise performance. If you want massive gain and sensitivity and high dynamic range, use this mode. In this mode, the output can be used as a single mono jack / TS cable.
Stereo Mode:
This is used when you want to connect the Haloplane to a balanced input using a TRS cable. Just as in mono mode, this provides excellent noise performance, but results in a mono signal. In some cases, this can be used to eliminate ground loop noise caused by other gear.
USB Ground Loops
When the Haloplane is connected to other audio equipment, you may occasionally hear background hum or other unwanted noise. This is usually not caused by the instrument itself, but by the way multiple devices are interconnected.
A common example is connecting Haloplane's USB to a computer while also routing its audio outputs back into the same computer through an audio interface. In this configuration, both the USB cable and the audio cables provide ground connections, creating the conditions for a ground loop.
This noise can usually be eliminated by using the Haloplane's output in Stereo Mode as a balanced connection into balanced equipment (connecting via TRS), or by breaking the ground loop entirely: if the Haloplane doesn't require a connection to the computer for use with USB audio, use a separate power source for the Haloplane to break the loop.