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DAC+ ADC Pro no phono input

Forgive me as I'm new to all of this. 

I recently purchased a DAC+ ADC Pro and I'm attempting to follow this guide to airplay from a turntable. https://github.com/owntone/owntone-server/wiki/Making-an-Analog-In-to-Airplay-RPi-Transmitter#notes-for-hifiberry-dacadc-pro 

My setup uses an orbit basic turntable with a built-in pre-amp and I can verify that I get audio from the turntable with powered speakers. However when I use the phono inputs on the DAC+ ADC Pro and run `arecord -D hw:CARD=sndrpihifiberry,DEV=0 -f cd -d 0 -t raw  > /home/pi/music/AUX` to write to a file read by owntone following the guide, I just get quiet static noise.

Just out of curiosity, I tried the aux input and played music from my laptop into the pi, and I successully was able to stream music using the same arecord command. Any tips on what I'm doing wrong?

A few notable outputs

pi@raspberrypi:~/music $ arecord -L
null
    Discard all samples (playback) or generate zero samples (capture)
default
hw:CARD=sndrpihifiberry,DEV=0
    snd_rpi_hifiberry_dacplusadcpro, HiFiBerry DAC+ADC PRO HiFi multicodec-0
    Direct hardware device without any conversions
plughw:CARD=sndrpihifiberry,DEV=0
    snd_rpi_hifiberry_dacplusadcpro, HiFiBerry DAC+ADC PRO HiFi multicodec-0
    Hardware device with all software conversions
sysdefault:CARD=sndrpihifiberry
    snd_rpi_hifiberry_dacplusadcpro, HiFiBerry DAC+ADC PRO HiFi multicodec-0
    Default Audio Device
dsnoop:CARD=sndrpihifiberry,DEV=0
    snd_rpi_hifiberry_dacplusadcpro, HiFiBerry DAC+ADC PRO HiFi multicodec-0
  Direct sample snooping device
pi@raspberrypi:~/music $ grep -vE '#' /boot/config.txt

dtparam=i2s=on
camera_auto_detect=1
display_auto_detect=1
auto_initramfs=1
dtoverlay=vc4-kms-v3d,noaudio
max_framebuffers=2
disable_fw_kms_setup=1
arm_64bit=1
disable_overscan=1
arm_boost=1
dtoverlay=i2s-mmap
[cm4]
otg_mode=1
[all]
dtoverlay=hifiberry-dacplusadcpro,slave,leds_off=true
pi@raspberrypi:~ $ uname -r
6.1.74-v8+

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