![]() Shared Power OutletĪlways connect your devices to the same power outlet (e.g. If you are going to use a replacement power supply unit, make sure that its specifications meet the ones required by your computer in order to avoid permanent damage. Disconnect your computer from your power supply so that it runs on battery power and verify if this resolves the issue. Power SupplyĪ low quality power supply unit can lead to ground loop noise, particularly on laptops. Some devices offer a switch for this whereas others may require a modified audio cable or a DI-Box (see Balanced Cables and DI Box chapters at the bottom of this article). Never lift the ground of the power connection!Ĭontact the manufacturer of your device before lifting the ground to find out if ground lifting is supported on your device. If you find the device that introduces the ground loop, a ground lift of the audio connection may solve the issue. To check if the amplifier or active monitors create the ground loop, monitor your audio signal from the headphones output of your device (while the amplifier/active monitors are disconnected). external harddrives, MIDI controllers, etc.). This applies to all peripheral devices you may have connected (e.g. from your computer, mixer or MASCHINE+) but not the amplifier and / or speakers. In order to find out where the ground loop arises, disconnect all peripheries from your main device (i.e. ![]() The troubleshooting steps below outline the most common solutions. Resolving a ground loop requires some investigation. Electrical devices nearby such as fridges, electrical heaters, elevators, fans, dimmer switches, etc.Peripheral devices connected to your computer.This can be caused by devices that introduce an electric potential to the ground connection. On a different note, I've watched Amirim's video on understanding ground, and on balanced audio, but I'm still unsure of myself as to what is the ideal solution in my scenario.An unwanted hum or buzz can be heard in the audio signal. Lastly, would balanced simply be a better long term solution? If so, I'd rather do that than try to dance around this issue if it's the be-all, end all solution to my problem. Schiit's Unison USB supposedly isolates the USB input, would adding the ESS DAC for Asgard 3, or a Modi 3+ solve my issue, or would any other SE DAC offer the same isolation on its USB input? Is it safe for a isolation transformer to be plugged into a power strip? I'm contemplating whether to buy balanced amp and DAC, or to try my hand at isolating the usb source, or my pc, though in that I have a few questions: ![]() While PC headphone out, or USB ports, and by extention, the headphone output of my monitor outputs noise, and sounds like ground hum mixed with computer activity, which changes depending on the current load on my system, like gaming, or even moving a tab around. Noise is source-agnostic, connecting to mobile devices removes the noise completely. It's a custom tower PC, which through a Apple Type-C to 3.5 mm, connects to a Schiit Asgard 3 which powers my HE-4XX headphones. I'm hearing ground noise from my PC source. ![]()
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