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EM Sound Enhancer & Speaker Bundle

Experience high-fidelity sound on par with top-tier audio systems through our innovative Endpoint Mixing® technology. Effortless to set up and use, the Endpoint Mixing® (EM) Sound Enhancer works seamlessly with speaker sets, providing a versatile EM solution for everyday listeners, audiophiles, gamers, and more. This bundle includes the EM Sound Enhancer S305 and two sets of premium active stereo speakers, delivering exceptional sound quality and an immersive experience perfect for movies, music, video games, VR, and vinyl.

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The EM Sound Enhancer is easy to set up.

Audio Input:

Use a standard RCA cable to connect any line-level stereo source to the EM Sound Enhancer.

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Audio Outputs:

  • Front Speaker: Connect the front speaker to the EM Sound Enhancer using a standard RCA cable.

  • Back Speaker: Connect the back speaker similarly using a standard RCA cable.

  • Recording Output (Optional): If desired, connect a subwoofer using a standard RCA cable.

EndpointMix Sound Enhancer Back Panel View

Discover more

The EM bundle is a compact yet powerful system that employs the novel Endpoint Mixing® sound reproduction method to deliver room-filling, high-quality audio. Its small footprint allows flexible placement, and it connects easily to any stereo sound source.

 

For improved low-frequency performance, you can optionally add a subwoofer. When doing so, set the subwoofer’s low-pass filter to match the lowest frequency range of the back speaker.

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Power Level:

With over 120W of total power, the system delivers ample headroom and room-filling sound.

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Endpoint Mixing® Sound Enhancer:

The world’s first audio processor powered by groundbreaking Endpoint Mixing® technology.

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Stereo Speakers:

Two pairs of active speakers (four in total) deliver premium sound using the straightforward placement method illustrated below. For an even more refined experience, audiophiles may opt for passive speakers with a dedicated preamp and amplifier.

Customer Testimonials

Olusola Osinoiki, UK

“The sound quality is exceptional - crystal clear and high-quality. With Endpoint Mixing®, missing a live concert or sporting event no longer means missing the experience. It's like being there, regardless of when you tune in. This innovation is truly groundbreaking!”

Optimal Speaker Placement

For a Room-Scale Environment

Unlike traditional stereo setups, Endpoint Mixing® (EM) uses a multi-layered speaker arrangement for natural acoustic summation, enhancing depth and realism with minimal room treatment. The front layer is positioned at ear level for clarity, while the back layer is lower to expand depth. The ideal listening spot is at the center of the room, but excellent sound quality extends to nearby positions to the left and right. Using the back layer as a reference, the front layer should be 30% forward, although this can be adjusted between 10% and 40% depending on your room acoustics. While our EM technology ensures excellent sound in untreated spaces, strategic enhancements to room acoustics can further optimize the experience. SIREMIX’s patented Endpoint Mixing® redefines sound quality, delivering a perfectly balanced, deeply immersive, and lifelike listening experience.

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Click the more button for additional information about speaker placement.

Precision Audio for Desktop Spaces

Endpoint Mixing® (EM) enhances nearfield listening, creating a precise and immersive soundstage for desktop setups. The tiered speaker arrangement ensures that direct and reflected sound waves blend seamlessly, enhancing depth and spatial accuracy. Desk reflections with the front speakers may reduce clarity, but using speaker stands or tilting them upward minimizes interference and enhances imaging. The primary listening position is centered at the desk, with excellent sound quality extending across the workspace. Positioning the front layer 30% forward relative to the back layer ensures optimal depth, with flexibility for desk size and acoustics. While EM technology delivers exceptional sound in untreated spaces, simple acoustic refinements can further enhance the experience.

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Click the more button for additional information about speaker placement.

EM Certified and Tested Speakers

For more information:

We are committed to delivering exceptional acoustic performance. Our amplifiers undergo rigorous testing with a variety of third-party speaker brands to ensure they meet and exceed our precise criteria for sound clarity, balance, and power handling. This meticulous qualification process guarantees that each speaker perfectly complements our technology, seamlessly adapting to the diverse preferences and needs of our users. By continuously certifying sound systems, we exceed audiophile expectations, ensuring an unmatched listening experience.

Certified

Certified and Tested Speakers

PreSonus Eris® 3.5

High-quality, active studio monitors that enhance the overall audio experience with precision and clarity. While designed for near-field listening, combining two sets of PreSonus Eris® 3.5 speakers (i.e., four speakers total) can create a wider soundstage with greater depth and clarity. This configuration is ideal for home theater systems and desktop entertainment. Internal tests and user feedback indicate that our system can deliver sound quality comparable to mid and higher-end systems.

Power:

100W

Use case:

Best for regular room-scale environments, and accompanied with a TV set.

Audioengine® A2+

Active speakers with a compact footprint, delivering a high-quality audio solution. Although intended for near-field listening, pairing two sets of Audioengine® A2+ speakers (i.e., four speakers total) can deliver a much wider soundstage with improved depth and clarity. This configuration is ideal for a small footprint environment, e.g., a desktop. Internal tests and user feedback indicate that our system offers audio quality on par with mid and higher-end systems.

Power:

120W

Use case:

Best for desktop environments.

Klipsch® R-51PM

Deliver high-quality, dynamic sound with a warm tone, these powered stereo speakers are suitable for a variety of audio experiences. Featuring a high-performance Class-D amplifier and a compact design, these speakers provide robust bass through Dynamic Bass EQ. Enhancing audio performance without any loss of quality, making them ideal for medium to large spaces such as apartments. Combining two sets of Klipsch® R-51PM speakers (i.e., four speakers total) with the Endpoint Mixing® Sound Enhancer S305 can create a significantly wider and deeper soundstage with exceptional clarity. With over 170W power output, it can effortlessly fill a medium-sized home theater and beyond.

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Our internal test reports show that the sound system combining the EM S305 and Klipsch® R-51PM (priced at approximately 2,500 USD) delivers nearly 90% of the sound quality of a high-end system valued at around 50,000 USD — specifically, the Bowers & Wilkins® 803 D4 paired with a Chord® preamp and power amp.

Power:

170W

Use case:

Best for mid to large room-scale environments.

Important Notes

* To achieve the Endpoint Mixing® sound, you need two sets of identical stereo speakers (four speakers in total).

* All Endpoint Mixing® products are protected with a 2-year warranty and a 30-day money-back guarantee.

* Disclaimer: Performance claims are based on internal testing and user feedback. Individual results may vary.

Input Audio Connector

We recommend adding an Input Audio Connector or DAC (Digital-to-Analog Converter) to your Endpoint Mixing® setup. This device provides convenient volume control, makes it easy to switch between multiple audio sources, and can improve overall sound quality. Look for a unit that offers a variety of input ports (e.g., optical, Bluetooth, analog, HDMI, USB) and, ideally, includes a remote control for hassle-free operation.

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There are many options, from budget-friendly models (around $30) to high-end audiophile equipment. As a basic yet versatile example, the Soomfon 3-in-1 Bluetooth 5.2 connector has volume control supporting optical, Bluetooth & analog, and delivers excellent sound quality.

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Key Benefits:

  • Volume Control: Precisely adjust your system’s output level.

  • Multiple Inputs: Seamlessly switch among various devices (e.g., phone, PC, TV).

  • Enhanced Sound Quality: Leverage the DAC’s processing to refine and enrich your audio experience.

  • Upgradability: Easily integrate additional audio sources as your setup evolves.

Kickoff Winter with Huge Discounts!

Eco-Friendly Design

Our commitment of making every product eco-friendly goes with our product, suppliers, internal process and everything we do.

24/7 Support

Our customers deserve the highest level of support, and we work tirelessly to maintain those standards. When you choose to work with our team, know that you are consistently choosing quality and excellence. Customer service is at the heart of everything that we do.

International shipping

In today’s globalized world, chances are you are interacting with people from more than one country. You benefit from this capability and we bring you amazing sound wherever you are.

Advanced Tech

We connect with our customers in every way we can to share our experience and engage with ideas and innovation. Feel free to get in touch, post, share, and like us.

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©2025 by SIREMIX GmbH. All Rights Reserved. Siremix is a German limited liability company. Endpoint Mixing® is a brand, patent, and registered trademark of Siremix GmbH. Berlin reg. no. HRB 175935B. US Pat. 998636410993059. European Pat. 3142383. China Pat. 2015800219692017800381147. Japan Pat. 62855743227174Legal Notices.

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