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The Benchmark for Audio Testing, Measurement & Analysis

APX is the culmination of over 40 years of leadership in audio measurement, trusted by the biggest brands in audio design and manufacturing.

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The Benchmark for Audio Testing, Measurement & Analysis

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APX is the culmination of over 40 years of leadership in audio measurement, trusted by the biggest brands in audio design and manufacturing 1.

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Hardware Options

 

Software Options

  • Advanced Master Clock
  • ASIO standard
  • Bluetooth Duo
  • Bluetooth Legacy option
  • PDM option
  • Digital Serial I/O
  • HDMI2 + eARC
  • Advanced Digital I/O

 

Our high-quality audio test and measurement solutions are engineered for

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Our high-quality audio test and measurement solutions are engineered for. Our high-quality audio test and measurement solutions are engineered for.Our high-quality audio test and measurement solutions are engineered for

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New to Audio Testing? We Can Help.

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Smart Speaker Measurements

Get an overview of smart speaker acoustic measurements with a focus on frequency response.

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Smart Speaker Measurements

Get an overview of smart speaker acoustic measurements with a focus on frequency response.

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Smart Speaker Measurements

Get an overview of smart speaker acoustic measurements with a focus on frequency response.

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Audio Precision Analyzers: Campfire Audio’s Key to Superior Sound

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Audio Analyzers 123

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APx555B Series

APx555B Series

Highest performance analog audio analyzer. Ideal for all applications that push the limits of analog audio performance.

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APx555B Series

APx555B Series

Highest performance analog audio analyzer. Ideal for all applications that push the limits of analog audio performance.

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Class A amplifier

Class A amplifiers operate with current flowing continuously through output transistors, resulting in smooth, linear signal amplification. Known for their excellent sound quality with very low distortion, Class A amplifiers are inefficient, generating significant heat and consuming more power. They’re favored in high-end audio systems where fidelity is paramount. 

Class A amplifier

Class A amplifiers operate with current flowing continuously through output transistors, resulting in smooth, linear signal amplification. Known for their excellent sound quality with very low distortion, Class A amplifiers are inefficient, generating significant heat and consuming more power. They’re favored in high-end audio systems where fidelity is paramount. 

Class A amplifier

Class A amplifiers operate with current flowing continuously through output transistors, resulting in smooth, linear signal amplification. Known for their excellent sound quality with very low distortion, Class A amplifiers are inefficient, generating significant heat and consuming more power. They’re favored in high-end audio systems where fidelity is paramount. 

Class A amplifier

Class A amplifiers operate with current flowing continuously through output transistors, resulting in smooth, linear signal amplification. Known for their excellent sound quality with very low distortion, Class A amplifiers are inefficient, generating significant heat and consuming more power. They’re favored in high-end audio systems where fidelity is paramount. 

Featured Events

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APx500 Workshop
Santa Clara, CA, USA
March 25, 2025

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APx500 Workshop
Santa Clara, CA, USA
March 25, 2025

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APx500 Workshop
Santa Clara, CA, USA
March 25, 2025

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Our high-quality audio test and measurement solutions are engineered for precision, playing a critical role in the development, validation, and quality control of a wide range of devices.

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