Can I connect a turntable to the AXN10/MXN10?

The AXN/MXN doesn't have any analogue inputs or a built in phono stage. There is, therefore, no way to directly connect a turntable to the device.

You should, however, be able to connect your turntable directly to an analogue RCA input or phono input on your connected amplifier, depending on whether your turntable has its own built-in phono stage.