RZ062 Equalizer "The Sweetest EQ of all Times" The exact models of Klangfilm RZ062 vintage EQ modules. Two plug-ins for music production and mastering. Both RZ062 plug-ins deliver pleasant vintage warmth and amazing presence to your vocals, instruments, and entire mixes.

We have optimized and improved the tube simulation part of DSP as well as substantially improved CPU consumption. This allows you to have up to four times more RZ062 equalizers in your project. Calibration is now available as an audio parameter instead of an internal setting. Still, the default calibration value mechanism has been kept. We've also added an AI zoom option and extended support for the latest operating systems and DAWs.

The RZ062 Equalizers were designed in Germany almost 60 years ago for installation in mixing consoles, together with the U73b compressors and other ingenious valve-based modules of that time. They were used in European studios to perform modification of frequency characteristics of the recorded sound to eliminate undesired studio acoustics. But their complex valve circuits bring something much more interesting than just basic equalization: The incredibly subtle sound color, which is highly valued in modern recording projects. Nowadays, these 6 lbs 300 V powered units are scarce. Due to their inaccessibility and remarkable sound, their price climbs to over $12.000 per pair. But thanks to our precise circuit modeling technique, these gems can return to your projects. We have modeled the equalizer circuits and added components from the original consoles, such as meters and gain controls.

Nowadays producers tend to surf through various frequencies and spend hours on trying to find the sweet spot of their mix. But the vintage gear worked differently.

The RZ062 EQ's controls adjust precisely selected fixed parameters. They are perfectly sonically balanced to give the immediate and no compromise results. In addition, the circuitry adds wonderful colour to the entire material.

The RZ062a and RZ062b modules differ in the function of the central knob. The a-module middle handle rotates the entire frequency curve by around the central point (650 Hz). When the bass frequencies are raised, the trebles are simultaneously lowered.

The b-module is even more complicated. Its presence knob lets you choose one of four frequencies (1.4, 2, 2.8 and 4 kHz) and adjust their gain at the same time. This parameter helps your sonic material to cut through very gently and sensitively.

To create these amazing plug-ins we had to emulate more than 200 circuit components. That includes 3 triodes, input and output transformers. It is not just any circuit but someone did a great job focusing on the details. Each part has its own thoughtful meaning. For RZ062 we used so called white box modeling. We described the whole circuit with complex math equations based on the circuit analysis. Eventually, the overall model was fine tuned by measurements and component-values fitting algorithm. to find as the closest model to the real device as possible.

"RZ062's place is everywhere where extra bass, treble or presence is needed while improving the overall colour, smoothness, and tightness of the sonic material. RZ062 is incredible on vocals, bass or acoustic instruments. But due to the advanced controls – the independent left/right channels tweaking or mid/side operation - the main point of the RZ062 EQs is the top quality mastering purpose."