Elysia Xfilter 500

A Class-A EQ Designed for the 500 Series, in the Spirit of "Mix Bus" and Studio Pairing

Designed in the 500 series format, the xfilter 500 brings the approach of a Class-A equalizer in a compact solution, ideal for integrating true analog color into a modern studio rack. Its stereo linked design (two channels, one set of controls) naturally positions it for uses demanding perfect symmetry: stereo buses, stems, monitor returns, or processing a stereo instrument (keyboards, overheads, rooms, synths).

Its DNA is clearly oriented toward musical and enhancing equalization: openness, definition, a sense of depth and projection. And since it is often paired with dynamic chains with a strong character, it fits particularly well as a processing companion to build a coherent stereo channel, quick to set and easy to recall.

Who It's For and Studio Applications

The xfilter 500 is aimed at sound engineers, producers, and demanding home studio users who want a mastering-friendly stereo EQ in the 500 series format, without compromise on adjustment precision. Thanks to its detented controls, it is perfectly suited to environments where sessions are chained and quick recall is essential: mix revisions, alternates, stems, or post-production.

In mixing, it excels at sculpting a stereo bus with finesse: cleaning up the low end, taming overly aggressive brightness, opening the highs, or rebalancing tonal balance without degrading the image. On individual sources, it offers a very "console/outboard" approach: firm lows, shapeable mids (with selectable Q bandwidth), and the ability to add presence without making the signal sound artificial.

Key Features: Versatile, Precise, and Inspiring Equalization

True Stereo Linked: An Image That Doesn't Shift

The immediate strength of the xfilter 500 is its true stereo action: two channels controlled simultaneously, designed to remain strictly coherent. The selected film capacitors and low-tolerance components aim for rigorous matching, essential to avoid left/right drift during fine corrections. The result: a stable stereo equalization, especially appreciated when working on the high spectrum or subtle settings.

Shelves That Transform into Resonant Filters: From Cleaning to Sound Design

The high shelf and low shelf bands can be switched to resonant high-pass/low-pass filters. This resonance adds musicality and a sense of energy at the cutoff point: perfect for cleaning without dulling, tightening an overpowering low end while retaining impact, or controlling excess highs without killing the source. These filters quickly become "secret weapons" in mixing, both on buses and individual tracks.

Two Parametric Mids with Switchable Q: Precision or Smoothness

The two parametric mid filters form the core of the shaping: they allow working on a presence area, removing a resonance, or boosting character. The switchable filter quality (wide or narrow Q) offers two complementary behaviors: a wide mode for natural tonal moves, and a narrow mode for more surgical correction when controlling a precise frequency.

An Additional Passive LC Stage: The "Magic" Touch in the Highs

The xfilter 500 includes a passive LC stage with isolated coils dedicated to the highs. This approach, highly appreciated for its musicality, aims to bring a sense of air and lift without harshness. In practice, it can help illuminate a vocal, add brilliance to a bus, or enhance the sense of depth and "hi-fi" in a mix, while maintaining an elegant analog texture.

Detented Controls: Fast Workflow and Reliable Recall

Detented potentiometers make all the difference in a professional workflow: quick adjustments, easy comparisons, and precise recall. This is a concrete advantage both in production studios and mixing environments where client revisions are frequent.

Manufacturing and Philosophy: No Compromise, Compact Format

Made in Germany, the xfilter 500 emphasizes uncompromising build quality and performance-oriented design. Note: like any 500 series module, it requires a compatible 500 series rack (not included) to operate.

Technical specifications