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Elysia xfilter 500 - High-End Pro Audio Class-A Stereo EQ for Open, Musical, Mix-Ready Tone

Bring true premium analog EQ into your 500 Series rack with the elysia xfilter 500 - a high-end stereo 4-band equalizer built for engineers who want precision, depth, and musicality without sacrificing speed. With its 100% discrete Class-A topology, carefully matched stepped controls, and signature Passive Massage high-band circuit, the xfilter 500 delivers polished tone shaping that feels expensive, musical, and immediately useful on everything from individual tracks to full mix bus duties.

Product Highlights

• True stereo analog EQ: A real stereo 4-band equalizer designed to shape both channels with precision and consistency - ideal for buses, stems, and full mixes.
• 100% discrete Class-A sound: Delivers an open, punchy, high-end character with excellent transient detail, depth, and a refined top end.
• Extremely musical filter design: High and low shelves can be switched into resonant high-pass and low-pass filters, while the two parametric mid bands offer switchable wide or narrow Q for broad shaping or more focused correction.
• Passive Massage high band: A unique additional passive LC filter that adds air, polish, and silky brilliance in a way that feels premium and natural, never sharp or brittle.
• Stepped controls for precision and recall: Fast recall, precise channel matching, and the confidence to use it on critical stereo material without worrying about imbalance.
• Premium pro audio build quality: Designed for serious studio work with top-tier engineering, low noise, high stability, and the kind of confidence you expect from elite analog hardware.

Why engineers love it

• It makes sources sound finished fast: The xfilter 500 has that rare ability to make tracks, stems, and mixes feel more open, polished, and expensive with just a few moves.
• Perfect for stereo work: True stereo operation and stepped controls make it a serious choice for mix bus processing, stem shaping, and final sweetening.
• Flexible without sounding clinical: You can tighten the low end, open the top, shape the mids, or clean up build-up - but it always stays musical and pleasant to use.
• High-end analog EQ in a compact format: It brings premium pro audio tone and mastering-style precision into a 500 Series workflow that is fast, practical, and studio-friendly.

Specs at a glance

• Format: API 500 Series
• Type: True stereo 4-band equalizer
• Topology: 100% discrete Class-A
• Filters: High and low shelf, switchable to resonant high-pass and low-pass
• Mid bands: Two parametric mid bands with switchable Q
• Extra circuit: Passive high-band "Passive Massage" filter
• Controls: Stepped potentiometers
• Frequency response: Less than 10 Hz to 400 kHz
• Dynamic range: 120 dB
• Maximum input/output level: +21 dBu
• Input impedance: 10 kOhm
• Output impedance: 68 Ohm

If you want an EQ that combines clarity, depth, speed, and true high-end analog elegance, the elysia xfilter 500 is a standout choice. This is the kind of hardware that does not just correct sound - it elevates it. Whether you are adding sheen to a vocal bus, tightening a mix, shaping stems, or giving a full master that final touch of class and dimension, the xfilter 500 delivers premium pro audio results with ease.

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