Video by Heritage Audio via YouTube
Source
More info:
– Heritage Audio HA73EQ JR 500 Series:
– Heritage Audio SYMPH EQ:
https://heritageaudio.com/symph-eq/
– Heritage Audio MOTORCITY EQalizer:
https://heritageaudio.com/motorcity-eq/
– LANG Electronics PEQ-2 Program Equalizer:
https://heritageaudio.com/peq-2/