Got it fixed by in with my MIO-892:

/etc/pulse/daemon.conf:
default-sample-rate = 48000

/etc/modprobe.d/azalia-microphone.conf 
#Valid values for position_fix are:
#0 = Auto
#1 = None
#2 = POSBUF
#3 = FIFO size
options snd-hda-intel position_fix=0

For Echo/Noise Cancellation:
/etc/pulse/default.pa  
load-module module-echo-cancel use_master_format=1 aec_method=webrtc 
aec_args="analog_gain_control=0 digital_gain_control=1" source_name=echoCan$
set-default-source echoCancel_source
set-default-sink echoCancel_sink

Its mainly taken from the arch-wiki - but only 'this' combination worked
for me.

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https://bugs.launchpad.net/bugs/1801540

Title:
  Microphone distorted sound on ALC892

Status in Linux:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete
Status in pulseaudio package in Ubuntu:
  Confirmed

Bug description:
  Not sure if I'll report this upstream but there is definitely an issue
  with microphone recording on my desktop, this is not happening on my
  laptop which has a different codec.

  Already tried all workarounds possible, no luck. Only with my desktop
  with this particular motherboard. No issues in Windows, the sound
  recorded in there is distorted and has some static and robotic tone on
  high-pitch.

  alsa-info on the attachments

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