I see some discussion of macOS recently and just wanted to toss out that I have a
CloudIQ from RFSpace and I couldn't be more pleased with it on macOS High Sierra: Very flat response, no drift, excellent balance, low intrinsic noise, huge dynamic range. Of course it cost some real dollars but like many things, you often get what you pay for. And no, I have nothing to do with the company, I am not a paid shill, I have nothing to gain whether you get one or not, just wanted to share what works well for me.
While I'm at it, I'll mention my SWL antenna is a dual loop system using a broad band amp from
LZ1AQ. The circuit can be switched so the loops are separate or combined, and the choices can make a huge difference in SNR. Again, no connection or gain to be had, just a happy user.
73, Elwood, WB0OEW