CharterOak PEQ-1

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Page last updated Mar 02, 2026

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Description

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The CharterOak PEQ-1 is an innovative addition to any studio setup, offering a blend of vintage charm and modern precision. This hybrid tube/solid-state equalizer is designed to provide unparalleled audio fidelity and flexibility. Whether you're looking to enhance vocal clarity or add warmth to an instrumental track, the PEQ-1 delivers with exceptional detail and a smooth tonal quality that is both distinctive and versatile.

Engineered for professional studios, the PEQ-1 features a fully parametric equalizer with high and low-pass filters, making it a powerful tool for shaping sound. Its unique combination of analog warmth and digital precision aids in crafting the perfect mix, ensuring that each track stands out with crystal clear clarity. The intuitive layout and robust build quality make it an ideal choice for both seasoned engineers and those new to audio production.

Its ability to sculpt sound with precision is matched by its reliability, making the CharterOak PEQ-1 a staple for any serious audio engineer looking to elevate their projects. The unit's seamless integration into various studio environments highlights its adaptability and ease of use, ensuring that it meets the demands of diverse recording situations.

Key Features:

Hybrid tube/solid-state design for rich, warm sound
Fully parametric equalizer with high and low-pass filters
Intuitive control layout for easy operation
Designed for professional audio fidelity and precision
Robust construction for long-lasting performance

Videos

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CharterOak PEQ1 - EQ on Full Mix Video Demo

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CharterOak PEQ1 - EQ Drums Mix in Stereo Video

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Charter Oak PEQ1 EQ - AES '09

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CharterOak PEQ1 EQ In detail Part 1/2

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CharterOak PEQ1 EQ In detail Part 2/2

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Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about CharterOak PEQ-1.

Features and functionality

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The CharterOak PEQ-1 is noted for its ability to create a gentle high shelf filter curve, affecting frequencies down to 8-10kHz, not just above 20kHz.
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Comparisons

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The Acustica Diamond 3 is a sampled version of the CharterOak PEQ-1, offering similar high-end "lifting" capabilities, particularly with its 50kHz shelf.
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Use cases and applications

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Boosting frequencies above 20kHz is used to subtly brighten audio without affecting the lower high frequencies, useful in high-fidelity studio environments.
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Software and compatibility

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While many EQs and DAWs operate at sample rates up to 192kHz, boosting frequencies above 20kHz in sessions lower than this will have no effect due to anti-aliasing.
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User experience

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High-frequency boosts can interact harmonically with lower frequencies, enhancing the perceived audio quality even if the actual frequencies are inaudible.
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