Purple 4

Simply put, Purple 4 is the most extensive collection of legendary passive equalizers on the market. It contains 8 different plugins, from an authentic vintage treasure of a machine, as well as modern re-issues of the same iconic designs. Meticulously sampled using top-tier analog equipment, Purple 4 delivers vintage character and modern flexibility, available in VST3, AAX, and AU formats.

Key Features

Faithful Analog Hardware Emulations: Includes a total of 8 different standalone plugins, each replicating legendary studio EQs and preamps.
New MT Ultra Equalizer: A mastering-grade equalizer designed with ultra-detailed bass, high dynamic range, and refined top-end clarity.
Advanced Monitoring Options: Offers multiple precision listening modes—Delta (Δ), Left/Right (LR), Mid (M), and Side (S)—for improved mix accuracy and stereo field analysis.
Hyper Technology: Our proprietary modeling approach delivers improved processing efficiency, reduced CPU usage, and ultra-realistic analog response.
Factory Presets: Developed by world-renowned sound engineers, these presets provide immediate creative inspiration and optimal starting points for a variety of use cases.
Adaptable GUI: Fully resizable user interface ensures seamless compatibility across screen resolutions and DAW environments.

Purple4 P1: A Thousand Shades of Purple

The P-1 embodies what is arguably the most popular “Purple-stye” EQ design. Massive bass, silky air, and its incredible warmth are what made this processor a staple in studios all over the world. (Oh, and it lets you do the famous “trick,” too.)

Purple4 P-AA: The Modern Clone of a Passive Classic

The Purple4 P-AA was sampled from a passive equalizer clone built by a well-known Texan manufacturer. Tighter bass and a noticeably different feel in the higher frequencies make this unit a great alternative to the P-1 on more modern productions.

Purple M5: Instant Midrange Gratification

This is an emulation of a classic 3-band mono midrange equalizer. characterized by 2 boost bands and 1 dip band in the mids. Incredibly user-friendly, the M-5 is the ideal tool to fine-tune pretty much anything between 200Hz and 7kHz.

Purple4 M-5V: Vintage Legacy.

The Purple4 M-5V features the same controls as the M-5, but is characterized by a less pronounced high-cut roll-off, slightly different boost/attenuation levels for each band, and narrower fixed bandwidth control.

The lower peak band has a maximum gain of around 10dB, but that can vary depending on the frequency selected. The higher peak has a maximum setting of approximately 8dB. The mid attenuation varies between 10.5dB and 11.3dB.

Little quirks like these clearly demonstrate how even the same models can vary from unit to unit, especially when it comes to vintage hardware. Our digital model is true to life, so as to give you an experience that as close to the original as possible.

Purple4 H2: Your Key to Monster Bass

Purple4 H2 is a passive tube EQ renowned for its ability to boost and cut the low frequencies A Singing Filterwhile simultaneously fattening up the bass in the mix. This processor is derived from a rare 2U single channel program EQ.

Purple4 HLF: A Singing Filter

This simple yet powerful plugin completes the Purple4 passive EQ suite by adding a 12 dB/oct low cut and high cut filter, plus a preamp emulation derived directly from the Purple4 P-1.

Don’t let its surprisingly simple operation fool you — this is an ideal tool for tonal sculpting, and for achieving special effects. If you need to remove hum and rumble (or hiss and distortion) with the minimum loss of content, this plugin is going to give you offers the most musical results possible. And by carefully selecting and adjusting the frequencies you want to modify, you can easily create effects like “telephone” voices, sounds that seem to come from outer space, and much more!

Purple4 Pre: The Ultimate Tube-Based Preamp Module

Purple 4 Pre features a complete preamplifier section with 5 preamps that were borrowed from the other standalone Purple plugins, then completely revised and sonically enhanced to add the depth and color that tubes bring to the mix.

Purple 4 MT Ultra: Mastering True Stereo EQ with modern sonic enhancements

Purple4 MT Ultra is a high-end stereo mastering equalizer plug-in inspired by a renowned solid-state EQ. It combines minimalism and sonic excellence with advanced digital features such as stereo/mid-side processing, precision filtering, and enhanced saturation. Its timeless analog-inspired layout offers musicality, depth, and precision for mastering and mix-bus processing.

Designed as a true stereo processor, each EQ band has dual independent controls for left and right channels, or can be linked via the CLINK function. The M/S (Mid/Side) mode enables spatial tone shaping with surgical control over stereo imaging.