In which, one poster states that due to the power constraints of bus powered devices, the headphone outputs and phantom power will not perform as adequately as wall outlet powered devices. When doing some digging, I could only find forum posts almost a decade old. After all, USB only supplies 5V of power compared to power adapters which supply 9V. When writing this article, I too was curious if there were any cons of bus powered audio interfaces. As long as you’re buying from a reliable audio company, then there should be no concerns around audio quality. This was different in the past, but things have changed. So, bus power isn’t enough for larger audio interfaces, but it’s perfect for smaller ones with less inputs and outputs.Ībsolutely not, bus powered audio interfaces will sound exactly the same as wall outlet powered audio interfaces. It can only provide up to 5V and 900mA, which isn’t exactly a lot. As you might have guessed, USB power has its limitations. Simple.Īre All USB Audio Interfaces Bus Powered?Īctually, no. They get their power by connecting directly to your computer via a USB cable. But some need an external power supply to power them. That way your DAW can recognise them, enabling you to record audio directly. What does this mean in terms of audio interfaces?Īudio interfaces usually connect to your computer via a USB or Thunderbolt cable.
It simply gets its power through a USB cable. This means you do not need an external power adapter that plugs into a wall outlet.
However, only smaller audio interfaces can be bus powered, meaning your choice of audio interfaces is limited.Ī bus powered device is one that is connected and powered through a USB connection.
This means you do not need a power adapter or access to a wall outlet to power your audio interfaces. Let’s move on…Ī bus powered audio interface is powered through a USB cable that connects directly to your computer. In this article I’m going to cover everything about bus power, what it is, why it matters, and if you should buy a bus powered audio interface or not. And actually, it’s not the only time that the word ‘bus’ comes up in audio production.Īnyway, don’t worry. What the hell does it have to do with buses!? Well, absolutely nothing. No doubt you’re here now because you’re wondering ‘what is a bus powered audio interface?’.
There is a lot going on in an audio interface and many things to consider before buying one. I’ve owned a fair few in my time, but before I knew anything about audio production, I had a tonne of questions. If you want to record any form of audio or music at home, then you need an audio interface.
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