The 32-bit float output is processed via the NT1 5th Gen's in-built audio interface for the digital USB output only. The XLR output is a pure analogue output, like a traditional studio condenser microphone so does not support 32-bit float recording.
However, the incredibly low noise floor and dynamic range of the NT1 5th Generation is fully available on the XLR output and the NT1 5th Generation can be paired with any microphone preamp for capturing ultra-high-quality audio.
For more information about the NT1 5th Gen, please see our NT1 5th Gen User Guide.