Wireless GO II の送信機は24bitみたいですね。
Uncompressed recording: In this mode, the Wireless GO II transmitter records in an uncompressed WAV format, and currently utilises a 48KHz, 24-bit audio stream. In this mode, the unit can store up to seven hours of audio.
https://rode.com/en/about/news-info/Wireless-GO-II-On-Board-Recording-and-Audio-Export-Modes-Explained
32bit floatの説明にはちょっと匂わせもありますが
WAV 32-bit float: This exports an upscaled 32-bit float format file, great for compatibility with similar files in a DAW environment. It also offers possibilities for feature expansion via future firmware updates.