Maybe they mean just the equalizer circuit with the bass-treble knobs, not some fixed filters?
Maybe they mean just the equalizer circuit with the bass-treble knobs, not some fixed filters?
Could be i suppose.
Yes they totally mean that the knobs attack guitar EQ friendly frequencies. So do powerstage, orange baby etc. At noon the unit should sound as flat as possible. By today standards this is an old unit made around 2015. I guess class D amps have evolved.