We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Is a Dual Amplifier?

By Solomon Lander
Updated May 16, 2024
Our promise to you
EasyTechJunkie is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At EasyTechJunkie, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Also known as a two-channel or stereo amplifier, a dual amplifier is an audio component which can take two monophonic line level inputs and increase their output levels to drive two separate speaker systems. Dual amplifiers have historically been popular as a means of amplifying two-channel stereo signals and remain useful in multichannel sound systems. While the term "dual amplifier" is most common in professional audio circles, two-channel amplification tools remain prevalent in both home and car audio systems.

A dual amplifier, whether referred to as stereo, dual, or dual mono, contains two separate channels of amplification in a single box. This has the benefit of both saving space and reducing cost compared to mono amplifiers, since some components can be shared. On the other hand, it has the potential to introduce compromises in sound quality since having two separate signals mixed together increases the potential for the signals to leak together and cause distortion. In addition, sharing a single power supply between two channels can lead to a power shortage if both channels experience a peak at the same time.

The term "dual amplifier" is extremely common in the professional audio world where it is used to describe public address (PA) amplifiers as well as speaker amplifiers. It is also popular in car audio, where dual amplifiers frequently deliver power to two subwoofers in a system designed to maximize bass response. In home audio applications, the term is rarer, although it frequently is used to refer to dual mono designs which attempt to generate more separation between the two channels than a standard stereo amplifier.

With the ongoing popularity of surround-sound, dual amplifiers face competition from multichannel amplifiers. Home theater enthusiasts can buy amplifiers which contain five or seven channels of amplification in a single, large, component. Although these amplifiers have the advantage of being in a single box, they also have the disadvantage of having multiple channels in the box with the concomitant risk of interference and crosstalk. Audiophiles frequently eschew dual or multichannel amplifiers for monoblock amplifiers which contain just one channel of amplification and create no risk of interference between channels.

Dual amplifier components have an advantage over monoblock amplifiers even in applications where sound quality is the primary concern. Very high-end audio systems use a wiring technique called bi-amping in which a single channel of sound gets split into high and low frequencies. Separate amplifier channels send the high frequency signal to the speaker's tweeter, and the low frequency signal to the speaker's woofer. This theoretically provides better sound quality by both bypassing the speaker's crossover and by keeping the two different signals separate. In these applications, a dual amplifier serves the same role as a mono amplifier in a system that is not bi-amped.

EasyTechJunkie is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Link to Sources
Discussion Comments
EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.

EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.