Firium builds a complex FIR (Finite Impulse Response) filter to your specifications. See the results of your EQ with the built-in spectrum analyzer. Firium will not color your audio with the introduction of non-linear phase shift.
Good Points
* Linear phase mastering EQ
* Work with each channel individually
* Four channel linking modes
* Dynamically change the width of an EQ curve
* Altivec/Velocity engine optimizations
* Supports AudioUnit format
Elemental Audio Systems Firium Linear Phase EQ Specifications: