This was the first VST effect  EVER commercially sold by Steinberg in 1998.

And it was revolutionary! Behind the simple appearance of a graphic equaliser it was actually a match-eq effect, back in the day when computers could not handle more than four tracks of audio and all the converters were 16bit.

Nothing quite like it existed in any hardware or software form.

Own a piece of history with this simple booklet. Software not included (God knows where that went)