[sdiy] Decent 192kHz USB audio-interface

Brian Willoughby brianw at audiobanshee.com
Thu Apr 29 21:47:54 CEST 2021

The best gear that I'm aware of is the Sound Devices 700 series. It's not exactly an audio interface, but a portable recorder with FireWire access to the stored files. The microphone preamps on the 702 are lab grade - probably the best preamps for working with something like the Earthworks M50 microphone that's flat from 3 Hz to 50 kHz.

As for audio interfaces, the Metric Halo Labs MobileIO series supports 192 kHz on the LIO-8 (line level) and ULN-8 (mic & line level).

Both of these options are pricey. You might also consider Mark of the Unicorn (MOTU) who have been making 192 kHz interfaces for more than a decade. While I haven't used the Focusrite Saffire, that interface looks promising if you're on a budget. I believe Focusrite supports 192 kHz in some models.

Brian Willoughby

p.s. You might find it difficult to reach 80 kHz with a microphone, but I suppose you know your gear.

On Apr 29, 2021, at 03:43, Richie Burnett <rburnett at richieburnett.co.uk> wrote:
> Can anyone recommend a decent external USB audio interface that's capable of sampling at 192kHz in record and playback?
> This is a bit off topic, but it's still audio related! ;-)  Some of my colleagues do underwater acoustic communications work and have been using a "Creative Labs Sound Blaster X-Fi HD 24-bit 96KHz USB Audio Interface" with great success to record and playback ultrasonic signals up to 44kHz.  Now they are wanting to do similar up to around 80kHz so I'm looking for an external audio interface capable of sampling at 192kHz with an analogue bandwidth out to around 80kHz.
> The only application I'm aware of that requires this sort of analogue bandwidth is the delivery of composite FM stereo multiplex from studio to transmitter site over IP.  So, I know it is possible, but wanted to avoid buying lots of audio interfaces and testing them to see which are good to 80kHz!
> Any tips/pointers/experience good or bad would be much appreciated. Off-list is fine if high-bandwidth audio is not considered to be of interest to others.
> Many thanks in advance,
> -Richie,

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