Simple Explanation

A device similar to an AV receiver but without built-in amplifiers. It handles audio and sometimes video processing, along with preamplifier duties.

Concise Technical Definition

A pre-processor (or pre-pro) is a device that performs audio and video processing, as well as preamplifier functions, but lacks built-in amplification. It typically includes features such as bass management, equalization (EQ), digital signal processing (DSP), and other functions to prepare signals for amplification by external power amps.

Layman-Friendly Analogy

Think of it like the brain of an audio system—it processes all the sound and video signals, adjusts them for the best quality, and then sends them out to an external amplifier to make the sound loud enough for your speakers.

Industry Usage Summary

Pre-processors are commonly used in high-end home theater systems and professional audio setups, where external amplification is preferred for better sound quality and flexibility. These devices handle complex audio processing, including surround sound decoding, bass management, and EQ adjustments, but rely on external amplifiers for power. Pre-pros are especially useful for audiophiles or users looking to customize their sound system with higher-quality or multichannel amplification.

Engineering Shortcut

A device that performs audio/video processing and preamplifier functions, but requires an external amplifier for sound output.

Full Technical Explanation

A pre-processor (pre-pro) is a high-performance audio and video processing unit that includes many of the functions found in an AV receiver, such as audio decoding, digital signal processing (DSP), bass management, equalization (EQ), and preamplification. However, unlike an AV receiver, a pre-pro does not include built-in power amplification. It is designed to send processed signals to external amplifiers for amplification. This makes it ideal for audiophiles and home theater enthusiasts who want to use higher-end, custom amplification systems for more control over sound quality and power. Pre-processors are often used in multi-channel setups and complex audio systems.