Using a pre-out gives you the option of connecting an external amplifier instead of using the in-built amplifier in the receiver. Signals can pass through a receiver without being amplified, but another power source strengthens them.

A pre-out is usually found on more expensive receivers than those that don’t have this feature. They can also be found on receivers from different brands, but they tend to work differently in each brand.

If you're looking to build a home theatre system, you might have encountered "pre-out" several times. This article will go through what a pre-out is and how it helps your home theatre setup.

What is a Pre-Out?

A pre-out is a connection that allows you to send audio from your receiver to an external amplifier. Pre-outs are typically found on the receiver's back panel and are labeled “Pre-Out” or “Subwoofer.” 

This can be useful if you want to use more prominent speakers and add a subwoofer in another room. It allows you to send all audio through the built-in speaker system in your main room. However, you can still be able to connect an external amplifier for more power or better sound quality.

Why would you need a pre-out?

A pre-out allows you to split the signal from one source into multiple outputs. The most common use for a pre-out is to connect it to a power amplifier (PA), which will amplify the signal coming from the source and play it through speakers.

This is useful if you want to send music to multiple rooms or speakers at once or if you have more than one source of sound that needs amplification. For example, if you have one source of music playing in your living room but want another one playing in your kitchen

Or if you have a TV and gaming console in different rooms, then using a pre-out would allow you to do this easily.

When using pre-outs, the most important thing is choosing what type of connection will work best for your setup. And also, how many inputs/outputs are needed for each piece of equipment.

How Does a Pre-Out Help Your Home Theatre Setup?

A pre-out is a connection on a home theatre receiver that allows you to connect your home theatre store to a power amplifier. This will enable you to get better sound quality, more power, and more features out of your setup. 

However, it's important to note that not all receivers have this feature, and some amplifiers don't support the connection. Moreover, if you're looking for a way to improve the sound quality of your home theatre system, there are a few things worth considering before buying an amplifier or receiver with pre-outs.

Tips for the Pre-Out on your AV Receiver

When you're ready to start building your home theatre, pre-outs are one of the easiest ways. By connecting your speakers directly to the receiver, you can ensure that each speaker gets precisely what it needs. 

This means that you can optimize your audio setup and get the best performance out of each speaker in your system. As a result, we have come up with some tips for pre-out connections:

  1. Identify if your speakers will use the receivers or an external amp. For the speakers with an external amplifier, locate the corresponding pre-out link on the receiver. 
  2. Once your receiver and speaker are plugged in and connected, you should be ready to play audio. If you’re not getting any sound, double-check the connection you used on the receiver. Therefore, it can be easy to accidentally insert your cable into the wrong contact. 

Pre-out Uses and benefits

  1. Relieve the Receiver's Burden - When you use a pre-out with an external power source, your receiver will use less power. This is important because the more energy the receiver uses, the more heat it will produce. It is essential to take care of your AV receiver. 
  2. Add More Channels - If you want to add tracks to your speaker system, then pre-out will be helpful too. You can also improve the sound quality by using a pre-out in your home theatre system. 
  3. Easily Connects- Connecting a pre-out with your surround sound system is straightforward. You just need to plug it into each speaker and combine them all through an audio cable, which can be purchased at affordable prices from any electronics store or online shopping site.
  4. Enhance Audio - Pre-outs are a great feature of amplifiers. They allow you to send audio signals to passive speakers and active speakers with their amplifiers. Everything will sound better if you have a receiver with pre-outs and an amplifier for your passive speakers. Besides that, the overall sonic character of your system will be improved. While they aren’t indispensable for a basic speaker system, knowledge of pre-outs is essential for more advanced and expensive setups.
  5. Create Multi Channel - A pre-out separates a multi-channel audio source into a single channel. This can be useful for several reasons, such as separating other audio tracks so that you can apply different effects to each (e.g., reverb in one channel, delay in another).

You were adding the ability to mix and match multiple sources together (such as when you want to blend an instrument track with vocals).


Thanks for reading this guide to pre-outs. We hope it gives you a better understanding of what they are, how they work, and some of the other benefits. In addition, we can clear doubts if you have any more questions about pre-outs or anything related to home theatre equipment. 

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Author's Bio: 

Hi! I'm Digital Akshay. I've always been interested in different electronics. I began working for an A/V installation company years ago and realized my passion for home theaters!