Hello Stephen and welcome to the Cow Audio Forum.
The AT897 operates across a wide range of voltage. Please read the data sheet. 11-52 V DC.
https://eu.audio-technica.com/en/resources/f0e732ed5e1120ac_at897_ss_e.pdf
Also, from the same sheet of instructions: “The AT897 requires 11V to 52V DC phantom power or a 1.5V AA battery for operation. A battery need not be in place for phantom power operation.”
Brian’s got good advice here, though. Some battery powered mics require a battery in the slot in order to work with external Phantom power. Oddly there are battery powered mics that have problems with mixers when the mixer phantom power is applied. These mics usually have On/Off switches for the battery power and DO need to be turned off when attached to a mixer when the mixer’s Phantom Power is on.
So, try different mics and different inputs. Also, does the mic give you low level on the meters or is it just low at the headphones or at the camera? Are your meters set for Peak + VU?
Regards,
Ty Ford
Cow Audio Forum Leader
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