Here are the five reasons why I think that the Helios type 69 preamp NEQ is absolutely amazing-
Authentic End-to-End Circuit Emulation: The plug-in is a meticulous emulation of the rare Helios "golden units" used at Olympic Studios, including the Lustraphone transformer-based mic preamp, providing the full, non-linear character of the original hardware.
Unison Technology Integration: When used with Apollo interfaces, it utilizes Unison technology to mirror the exact input impedance, gain stage "sweet spots," and circuit behaviors of the hardware in real-time, allowing for authentic tracking.
Unique "Passive/Aggressive" 3-Band EQ: The EQ section allows for bold, aggressive shaping without harshness. It features inductor saturation behaviors that make radical EQ moves sound musical, even at extreme settings.
Distinctive Low-Frequency Boost/Cut Filters: The bass section is uniquely voiced with four specific boost filters (60, 100, 200, and 400 Hz) that deliver a solid, wide bass foundation, alongside a 50 Hz low-cut filter to remove mud.
Mid-Range "Growl" and Saturation: The plugin is famous for its punchy midrange, which is excellent for giving guitars and vocals a "saturated rock" attitude, often described as "fat mid-range" and "assertive growl".