Pricing and availability
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Average Price: $3,585
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$100
$501+
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Based on price data from 4 merchants for "SPL PassEQ". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
The SPL PassEQ is not just another equalizer in your studio arsenal; it's a masterpiece of passive EQ technology that redefines precision and musicality. Designed for professional mastering studios, this second-generation marvel builds upon its predecessor's legacy by offering an unparalleled level of frequency control and sonic detail. With its unique ability to handle both boost and cut controls independently across high, mid, and low bands, you can explore nearly three million possible frequency curves, ensuring your audio projects reach the pinnacle of sonic perfection.
What sets the PassEQ apart is its SPL 120V Rail Technology, allowing it to operate at a voltage that optimizes headroom and dynamic range far beyond typical EQs. This means your mixes will benefit from greater clarity, reduced listening fatigue, and an overall more natural sound profile. Whether you're enhancing the air in a vocal track or taming the midrange of a complex mix, the PassEQ's meticulously optimized Q-factors and expanded frequency selections provide the flexibility you need.
Crafted with precision in mind, the PassEQ features stepped ALPS potentiometers for easy recall, and its robust design ensures it can handle the demands of any professional environment. It's not just about shaping sound; it's about crafting audio experiences.
Key Features:
- High, mid, and low bands with independent frequency selection and boost/cut controls
- 12 selectable frequencies per band
- Optimized Q-factor for musical results
- Extended HF+ Band with 25kHz and 35kHz Air band frequencies
- Mid Range Cut starting at 200Hz
- SPL 120V Rail Technology for superior headroom and dynamic range
- Stepped 41-detent pots for easy recall
- Precision-detented ALPS RK27 potentiometers
Product specs
| Type | Solid State Mastering EQ |
| Number of Channels | 2 |
| Bypass | Yes |
| Number of Bands | 3 |
| Q Type | Variable |
| Freq Range High | 580Hz-22kHz, 5kHz-35kHz |
| Freq Range Mid | 200Hz-6kHz, 220Hz-4.8kHz |
| Freq Range Low | 30Hz-600Hz, 10Hz-550Hz |
| Inputs | 2 x XLR |
| Outputs | 2 x XLR |
| Rack Spaces | 4U |
| Power Source | Standard IEC AC cable |
| Height | 7" |
| Depth | 12.25" |
| Width | 19" |
| Weight | 22.5 lbs. |
FAQs
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What type of equalization does the SPL PassEQ provide?
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The SPL PassEQ is a solid-state passive mastering equalizer offering 3 bands of EQ with variable Q types, designed for precise sound shaping in professional mastering applications.
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How many channels does the SPL PassEQ have?
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The SPL PassEQ features 2 channels, making it suitable for stereo mastering tasks.
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What are the input and output connections on the SPL PassEQ?
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The SPL PassEQ is equipped with 2 XLR inputs and 2 XLR outputs, ensuring high-quality balanced connections for professional audio setups.
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Is the SPL PassEQ suitable for rack mounting?
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Yes, the SPL PassEQ requires 4U of rack space, making it compatible with standard 19-inch studio racks.
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Does the SPL PassEQ have a bypass function?
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Yes, the SPL PassEQ includes a bypass feature, allowing you to easily compare the processed and unprocessed signals.
Videos
Plugin Alliance
How to use the SPL Passeq in a mastering session with Ronan Chris Murphy
Reviews
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about SPL PassEQ.
Features and functionality
Comparisons
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Described as a "Pultec on steroids," suggesting it offers more robust functionality compared to standard Pultec-style EQs.
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SPL PassEQ is likened to the UAD Massive Passive for its forgiving nature but offers unique tonal qualities not found in Pultec plugins.
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Compared to Neve and API EQs, the SPL PassEQ is preferred for its distinct passive design which offers unique tonal coloration.
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User experience
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Owners find the UI challenging to read, indicating potential usability issues despite its performance.
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Users appreciate the SPL PassEQ for its ability to handle both L/R and M/S processing efficiently, often used for broad tonal shaping in mixes.
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Owners note that the SPL PassEQ excels in creating rich, vintage-style EQ curves that are ideal for mix bus applications.
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Use cases and applications
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The passive design causes interactive curves when cutting and boosting, leading to unique tonal paths not typically found in other EQs.
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The SPL PassEQ is frequently employed in mastering due to its ability to create smooth, musical EQ adjustments without harshness, especially in the high frequencies.
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Critic Reviews
4.5 out of 5
Based on 0 Reviews and 3 Ratings
Artist usage
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