Midas LEGEND L10 500 Series Rackmount Chassis for 10 Modules with Advanced Audio Routing

I have two of these and they work flawlessly. While it is always possible for somebody to get a noisy one, it's also very possible for you to have noisy 500 series units, EMI from nearby sources or poorly laid-out wiring that isn't taking care to avoid ground loops and mains power cables running beside and in parallel with signal cables.

Discovered after purchase that many of these units have high frequency noise from the power supply that is carried through the inputs.