Aphex

Aphex 320D Compellor Stereo Audio Level Controller/Compressor

Achieve Transparent Audio Level Control with the Aphex 320D Compellor The Aphex 320D Compellor is a stereo audio level controller designed for broadcast, recording, and live sound applications. With its unique combination of compressor, leveler, and limiter sections, the 320D provides unpreceden...

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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Achieve Transparent Audio Level Control with the Aphex 320D Compellor

The Aphex 320D Compellor is a stereo audio level controller designed for broadcast, recording, and live sound applications. With its unique combination of compressor, leveler, and limiter sections, the 320D provides unprecedented sound transparency while effectively controlling audio levels. Offers both balanced analog and AES digital connectivity.

Specifications:

  • Type: Stereo Audio Level Controller
  • Processing: Variable Slope Compressor, Dynamic Recovery Computer, Dynamic Verification Gate, Frequency Discriminate Leveler, Silence Gate, Peak Limiter
  • Analog I/O: Balanced Input and Output
  • Digital I/O: AES Digital Input and Output
  • Operation: Dual Mono or Stereo

Key Features

The 320D's Variable Slope Compressor, Dynamic Recovery Computer and Dynamic Verification Gate add adaptable compression to match the texture of changing audio sources.

The 320D's limiter acts on peaks that shoot beyond average program levels so they are easy to handle by any analog or digital recording system.

The 320D's Frequency Discriminate Leveler section, with the Dynamic Verification Gate and the Silence Gate, slowly adjusts the volume level of an audio stream with very complex algorithms. You don't hear it working.

Delivers transparent audio level control for broadcast, recording, and live sound. Balanced analog input and output. AES digital input and output. Dual mono or stereo operation.

When the analog input is used, the digital output contains the 320D's processing. When the digital input is used, the analog output contains the 320D's processing, properly leveled.

Specifications

Product Type
Stereo Audio Level Controller/Compressor
Compressor Type
Variable Slope
Additional Processing
Dynamic Recovery Computer, Dynamic Verification Gate, Frequency Discriminate Leveler, Silence Gate
Limiter Functionality
Peak management for analog and digital recording systems
Analog Inputs
Balanced
Analog Outputs
Balanced
Digital Inputs
AES
Digital Outputs
AES
Operational Modes
Dual mono, Stereo
Digital Output Processing (Analog Input)
Contains 320D processing
Analog Output Processing (Digital Input)
Contains 320D processing

Pros & Cons

👍 Pros

  • Offers adaptable compression that automatically adjusts to suit a wide range of audio source textures.
  • Features a transparent limiter designed to manage audio peaks effectively for both analog and digital systems.
  • Provides subtle, inaudible volume leveling through complex algorithms for a consistent audio stream.
  • Supports versatile connectivity with both balanced analog and AES digital inputs and outputs.
  • Allows for flexible deployment in either dual mono or stereo operational modes within a professional setup.

👎 Cons

  • The detailed operational adjustments for the Variable Slope Compressor are not explicitly detailed in the features.
  • Specific information regarding the unit's power consumption or rack space requirements is not provided.
  • Details on potential latency when converting between analog and digital signals are not outlined.
  • The product description does not specify the dynamic range or signal-to-noise ratio performance metrics.
  • Lack of explicit mention of front-panel metering or visual feedback for real-time gain reduction.

Frequently Asked Questions

The 320D Compellor employs a Variable Slope Compressor and Dynamic Recovery Computer to adapt its compression in real time, ensuring transparent level control for consistent broadcast audio.
Yes, when the analog input is utilized, the digital output carries the 320D's processed signal, allowing for integration into digital systems while taking an analog source.
The Frequency Discriminate Leveler, working with the Dynamic Verification Gate and Silence Gate, subtly adjusts overall volume levels using complex algorithms to maintain a consistent audio stream without audible processing.
The 320D is designed to deliver transparent audio level control, making it a suitable option for applications like mastering where maintaining the original sonic texture is important.
The 320D is capable of dual mono or stereo operation, allowing for flexible application based on the user's specific audio processing needs.
The limiter on the 320D acts specifically on audio peaks that extend beyond average program levels, ensuring they are managed effectively for both analog and digital recording systems.