Pricing and availability

We compare 600+ stores and found this item at 5 stores. Prices updated .

Sweetwater
5.0 (1)
$2,495.00
Guitar Center
$2,495.00
Amazon
$2,495.00
Reverb
5.0 (1)
$2,495.00 New
$1,950.00 Used
Vintage King
5.0 (5)
$2,495.00

Average Price: $2,404

High-end/Boutique

$100

$501+

Price Tier

Budget

Standard

High-end

Price History

Based on price data from 3 merchants for "API 529 500 Series Stereo Compressor". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Delve into the world of dynamic control with the API 529 500 Series Stereo Compressor, a powerhouse that merges classic audio engineering with modern innovation. This double-wide 500 Series module brings the celebrated features of the API 2500 bus compressor into a compact format, perfect for any recording enthusiast looking to elevate their sound. Harness the power of API's patented Thrust circuitry, delivering a robust and punchy low end that maintains clarity across the spectrum. Whether you're aiming for the warmth of vintage compression or the crispness of contemporary dynamics, the New/Old switch offers both feedback and feed-forward compression styles, giving you the flexibility to achieve the perfect sonic character.

Engineered with both the 2510 and 2520 discrete op-amps, the API 529 isn't just about control—it's about capturing the legendary API analog sound that has been the backbone of countless hits. The inclusion of an Auto makeup-gain button simplifies your workflow, allowing for seamless adjustments without disrupting your output levels. For the audio professional who demands precision, the API 529 provides detented, continuously variable controls and a detailed 10-segment LED meter.

Ideal for both the seasoned engineer and the aspiring producer, this stereo compressor ensures your tracks are dynamically rich and sonically pristine. Elevate your studio setup with a piece of equipment that pays homage to the past while paving the way for future sound innovation.

Key Features:

  • API's patented Thrust circuitry for enhanced low-end punch
  • New/Old switch for vintage feedback or modern feed-forward compression
  • 2510 and 2520 discrete op-amps for authentic API analog sound
  • Detented, continuously variable Threshold, Ratio, Gain, Attack, and Release controls
  • 10-segment LED meters for Gain Reduction and Input/Output Level
  • Selectable variable or auto compressor make-up gain
  • Requires compatible 500 Series chassis/power supply

Product specs

Brand API
Model 529 500 Series Stereo Compressor Module
Finish Black
Year 2018 - 2025
Made In United States
Categories 500 Series Modules and Frames, Compressors and Limiters

FAQs

What kind of sound characteristics can I expect from the API 529 Stereo Compressor?

The API 529 offers a classic analog warmth with its 2520 and 2510 discrete op-amps and transformer output, providing a rich, punchy sound that's ideal for both subtle dynamic control and aggressive compression.

How does the THRUST switch on the API 529 affect the compression?

The THRUST switch allows for frequency-dependent side chain control, enhancing low-end punch while maintaining high-frequency clarity, making it especially useful for drums and bass-heavy tracks.

What are the selectable compressor curve Knee settings on the API 529?

The API 529 features three selectable Knee settings, which allow you to adjust the compressor's response from soft to hard, providing flexibility in how quickly and smoothly the compression engages.

How does the New/Old switch on the API 529 affect its operation?

The New/Old switch on the API 529 allows you to choose between feed-forward (New) or feed-back (Old) compression modes, offering modern precision or vintage character in your sound processing.

Does the API 529 Stereo Compressor offer a bypass option?

Yes, the API 529 includes a three-way In/Out switch with a full hard relay bypass, allowing you to easily compare the processed and unprocessed signals.

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about API 529 500 Series Stereo Compressor.

Comparisons

  • API 529 is noted alongside WES Audio and Nekotronics BussCat as top stereo compressors, with varying styles and features for mixbus applications.

    Source

Features and functionality

  • API 529 is frequently compared for its ability to add subtle or pronounced compression effects, appealing for both mixing and mastering tasks.

    Source

Use cases and applications

  • The API 529 is highlighted for its ability to enhance mixes with a three-dimensional quality, making it ideal for users seeking an ‘expensive’ sound.

    Source

Value and pricing

  • Although not directly priced, the API 529 is positioned among top value-for-money compressors, suggesting competitive pricing relative to its capabilities.

    Source

Critic Reviews

API 529

soundonsound.com

The API 529 stereo compressor shines with its intuitive controls and characteristically punchy API sound, making it a worthy addition to any 500-series setup. Its unique Thrust side-chain filter offers remarkable flexibility, allowing for a balanced and clear sound across various instruments. However, the absence of parallel compression and mid-side processing may leave some users wanting more versatility for complex mixes. Despite its premium price tag, the 529's performance justifies the investment for those seeking quality compression. Overall, it’s a top contender in the compressor market, though not without a few drawbacks.

positive

Review: API Audio 529 Stereo Compressor

mixonline.com

The API 529 Stereo Compressor stands out for its impressive sound, effectively channeling the acclaimed API 2500's circuitry into a streamlined 500 Series module. Its versatility shines through with selectable compression types and the innovative THRUST circuit, making it adaptable for various sources. However, the inability to unlink the channels may limit some users' creativity. While the compressor delivers clean, distortion-free results even under heavy gain reduction, the mismatched silk-screened values for attack and release controls could lead to confusion. Overall, the API 529 is a worthy investment for those seeking high-quality stereo compression, but potential buyers should weigh its limitations carefully.

positive

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Artist usage

Add artist
See how Butch Walker uses API 529 500 Series Stereo Compressor

Butch Walker

Singer, Guitarist

The All-American Rejects

...
Verified via YouTube

At 35:01 in the video "EPIC HOME STUDIO Setup 2022 | Butch Walker (studio tour)" by Andrew Masters on YouTube, Butch Walker is shown using the API 529 500 Series Stereo Compressor.

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use API 529 500 Series Stereo Compressor, it is most commonly used with the following gear.

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