High End Hum on Inspire

[af-lasaxman]

Hello everyone. I seem to be getting a high-end hum coming from the outputs of my Inspire. I tried using the outputs L-R, the headphone outputs, but no luck. I've tried at another location (totally different house), ground lift plugs.

Any ideas? Thanks

[smocksturr]

I had that problem, I found that the preamps were all around noisy past about 1 o'clock.
I returned my inspire as I could not stand being able to hear hum and artifacts in my final mixes.
I might try the Firebox now.

[af-tech1]

What kind of computer is this? I've seen this happen on a lot of laptops. Running off battery power seems to fix the problem.