On June 8, 2021 9:11:56 AM HST, Will Godfrey <willgodfrey@xxxxxxxxxxxxxxx> wrote: > On Tue, 8 Jun 2021 13:52:59 -0500 > "Chris Caudle" <6807.chris@xxxxxxxxxxxxxx> wrote: > > >On Tue, June 8, 2021 6:43 am, Bill Purvis wrote: > >> Stagg dual DI box. > > > >Is it this device? > >https://staggmusic.com/en/products/view/SDIST-2-channel-passive-di-box-with-monostereo-switch/ > > > >I don't see any specifications, so I'll just guess that it is a pair > of > >low cost transformers inside the case. > > > >David Kastrup's advice about verifying the adapters cables is > > probably the first place to start. > > > > > to get a lot of hum pickup on that, which I think is down to the > > > proximity to the laptops. > > > >The only mains frequency noise around a laptop would be the power > > supply, I have a powered USB2 hub here. When its power supply is connected, I get some hum or noise. I don't know if that's a possibility here. My old band's sound set up - 12-channel Firewire audio, compressor, amp, in a single rolling cabinet - had a rackmount power conditioner that powered everything, including the mixer. Maybe something like that would help? --- David W. Jones gnome@xxxxxxxxxxxxx authenticity, honesty, community http://dancingtreefrog.com Sent from my Android device with F/LOSS K-9 Mail. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user