Noisy audio from EOS C70?

TarsierSpectral — Thu, 06 Aug 2026 12:46:18 GMT

I'm trying to figure out if my C70 has faulty preamp or this is a normal noise level. I'm attaching a file.

Some info:
1. Firmware 1.1.3.1 (latest)
2. No mic attached
3. vol level set to 5, Manual
4. audio input selection set to INPUT TERMINALS Input1 MIC+48 for both channels.
5. No fan running while recording
6. When I drop my file into video editing timeline, I have an audio track that is just noise and I have to either delete it or lower the volume on that track. I can't verify it but I feel like I never had to do that in the past.

Here is the file, if anyone is able to listen to it and tell me if this is a normal noise level on C70 I would greatly appreciate it.
https://www.dropbox.com/scl/fi/rqhdtp6kiw6vqb6zuht5g/5-MVI_0001.MP4?rlkey=9kogi48zoiuifzcx11rkb9sj1&dl=0
https://www.dropbox.com/scl/fi/rqhdt...11rkb9sj1&dl=0

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Noisy audio from EOS C70?