820 much better
One day we tried from my friend in Italy
Therecorderman
C37,A80,A816 and 820
With Spectral amp and Avalon speaker
We tried all day many master copy reel
C 37 beat and more musical for classic music
A80 bass more controlled and better in high
A816 little better and more clean than A80 and A 820 better in everything,from bass to dynamic and mid high
Only C 37 magic from Midbass to mid high