The Sweetest EQ of all time
Our RZ062 EQ plugin is one of the most unique EQ plugins on the market today. We have modeled the plugin after Klangfilm KL-RZ062 EQ, a unit designed in the 1960s that has been a fundamental part of any mixing desk, used on numerous albums and singles recorded in Europe (mainly in Germany) throughout the 60s’, 70s’ and 80s’. We were lucky enough to find the original unit, take it apart, carefully measure and replicate the complicated (over 200 components!) circuit, and put it into plugin form with its distinct features such as tube saturation and improve the user experience overall.
Distinct Features
The plugin includes the two most popular versions, which feature standard bass and middle and treble controls with some distinct features. Bass knobs control frequencies between 40Hz and 1 kHz, where you can add +12 dB and reduce -20 dB of gain. Treble knob controls frequencies between 1 kHz and 10 kHz, where it can add +12 dB or reduce -18 dB gain.
The most significant difference between versions comes in the middle-frequency control. The A version has a fixed frequency of 650 Hz, and the whole frequency spectrum rotates around it – so when you raise the bass frequencies, treble frequencies get lower, and vice-versa. The B-Version features a presence filter in place of the midrange control. With this control, you can boost four frequencies: 1.4 kHz, 2 kHz, 2.8 kHz, and 4 kHz, with each frequency having a maximum of 4.8 dB boost, with six steps of 0.8 dB gain.
Both versions include level controls for the input and output (something that the original unit obviously didn’t have) and different options for processing the stereo image of the signal. Mid/Side processing affects the middle and the sides of the stereo image separately – this way, you can create an engaging, full-sounding master. The Left/Right setting allows you to control each end of the spectrum independently or similarly – depending on whether you choose to link them.
The most prominent feature of this EQ is the modeled tube saturation, which is typical for analog gear. Balancing the input and output controls allows you to achieve beautiful, saturated sound without clipping the signal. For this reason, RZ is much more than just an EQ. It enables you to color your instrument, vocal, or mix and master tracks in the most spectacular, subtle way to achieve analog warmth, which modern producers seek in the present days of digital mixing. Whether you want to add extra bass, treble, and presence or improve your tracks’ overall smoothness, warmness, and tightness, RZ062 can do it all!
Recreating the magic
The RZ062 Equalizers, designed in Germany nearly 60 years ago, were created for mixing consoles alongside U73B Compressor (which we also recreated in plugin form – CLICK HERE TO LEARN MORE) and other valve-based modules. European studios used them to adjust frequency characteristics and reduce unwanted studio acoustics. However, their complex valve circuits offer something even more valuable: a subtle sound color that is highly prized in modern recording projects.
To create RZ062, we had to carefully emulate more than 200 circuit components. These highly precise analog circuits made the original units so special – and thanks to our hardware and modeling know-how, the plugin is just as special.
To take your mixes and masters to the next level, look no further than RZ062 EQ! Take advantage of the sweetest saturation, unique controls, and useful mastering features. Start your 14-day trial today!
