TBTECH–Plugin Alliance Kirchhoff–EQ v1.7.0

The ultimate in sound quality
With its "Robust Nyquist-matched Transform", Kirchhoff-EQ has made its digitally modeled frequency response more closely match its analogue counterparts, without the high frequency "cramping" found in regular IIR (infinite impulse response) equalizers.
High-precision processing
Sporting 64-bit operation by default, Kirchhoff-EQ uses a technique called "Double-Double" to make the precision of internal processing reach 117 bits! This is the first equalizer in the world to reach such precision. A technology called "Psychoacoustic Adaptive Filter Topologies" allows filter structures to intelligently change themselves to their "best fitting" state, resulting in optimized sound quality without tradeoffs in low or high frequencies.
A full palette of analog and digital filter types
Kirchhoff-EQ includes 15 unique filter types from conventional low pass, high pass, bell and shelving filters to more esoteric flat tilt, flat top and "sword" filters. Take advantage of 9 precisely matched vintage EQ models and fully variable EQ points not found in the analog domain.
Selectable phase modes
To meet all your phase relationship needs, the phase mode of Kirchhoff-EQ is switchable between zero-latency mode, analog mode, linear phase mode and an ingenious mixed phase mode that uses zero-latency when the band frequency point is low, and uses linear phase when it is high.
Deep and powerful dynamic EQ capabilities
Dynamics processing in the Kirchhoff-EQ are not just a bonus-they provide some of the richest dynamics features you have ever seen. With two-way thresholds, adjustable "onset" control and a relative detection option, you can do things other EQs simply can't: Simultaneously compress and expand to help "stabilize" a given frequency. EQ transients separately from body. Or, effectively sidechain one frequency band to the dynamic activity in another. Even the vintage-modeled curves can be applied to the dynamics processing.
Endless features and intuitive operation
Kirchhoff-EQ has every feature you could imagine in an EQ including spectrum grab, oversampling, lookahead, mid-side processing and monitoring, stereo width, global EQ scaling and more, all optimized for ultra low CPU workload.
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