Bereich03 Audio Passive-Mid is an EQ for the 500 series, manufactured by Bereich03 Audio.
History[]
The Bereich03 Audio Passive-Mid was released in 2015.[1]
Official description[]
Passive-Mid: This is a passive EQ with two Boost bands and one cut band. The curves are very broad.
All three bands are based on custom-made Inductors with an discret OpAmp for the gain.
There are two options for the discret OpAmp. The first is a more modern designe and the second is a more vintage, very simple designe with much more harmonics.