also apparently usb 2.0 can only read or write at once while usb 3. Only reason I could see for using usb 3.0 with audio is if you were using it somehow to writing/record in hi res to a sd card or usb drive since they are often tailored to high read speed but poor write speed (as in close to very hi res bit rates) and I've noticed with sd cards that usb 3.0 often slightly improves the write speed vs usb 2.0 (getting a better speed card/drive is much better though)Įdit: sorry, I remembered that USB 3.0 also is more power efficient so might be a bit better if you dac is drawing power from your source for some reason (eg if you're charging and using simultaneously when plugged into a computer). Even though USB 3.0 is faster this is not really significant for 2 channel USB audio, even Hi-Res. The audio standard used is USB Audio Class 2.0 and the connection system is USB 2.0, all USB 3.0 ports are backward compatible and all firmware revisions with version 4.0 or higher work correctly with all USB 3.0 chipsets/ports/drivers. I have had faster read/write speeds from my faster external drives after changing to usb 3.0 interfaces. We have started to use USB 3.0 connectors and cabling as they are generally of a higher quality than USB 2.0 ones. The difference is probably negligible for audio considering that USB 2.0 bit-rate (I typically see 20-30MB per sec running from a hard drive that can go faster) can easily cover the bit rates from higher quality files (like 5mb for some hi res 24bit file).ģ.0 only really stands out when you're working with video or constantly editing across external drives, as usb 2.0 limits can be below the max speed of faster hard drives and ssds.
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