Aperion DST Dual Firing Air Motion Transformer Ribbon Super Tweeter Pair

With this DST Super Tweeter, you’ll be able to hear every detail of your music clearly and beautifully, making it feel like you’re enveloped in the sound!

You may be familiar with the popular Planar PST and Aluminum Ribbon Super Tweeters RST, but our APERION Dual AMT DST Super tweeter delivers quick dynamics and an ultra-clear high frequency transient response.The Dual Firing DST Super Tweeter can be suitably matched with any speaker whose sensitivity is between 96 dB and 87 dB.

The actual size of the driver is 3.19 x 1.34 inches (81mm x 34mm). The thickness of the Kapton is 12.5 μm, the Aluminum is 20 μm, with a total thickness of 44 μm. Sensitivity was tested using 2.83v @ 1 meter. The crossover design is Butterworth. Using FR4 PCB board, and Aperion custom capacitors. The internal cables are high purity copper to minimize resistance.

It is a single ribbon, with dual firing open baffle. The driving force of this transducer is evenly distributed over the entire vibrating element.

This is not an ordinary tweeter

Traditional tweeters produce sound by pushing air using a diaphragm. In contrast, the Air Motion Transformer (AMT) compresses and expels air through a folded diaphragm, functioning like an "air accelerator." Since the airflow speed greatly exceeds the diaphragm's movement, the AMT offers remarkable sensitivity, an impressive transient response, and extremely low distortion.

For many audiophiles, a high-quality AMT tweeter combines the finesse of a ribbon tweeter, the dynamic impact of a compression driver, and the clarity of an electrostatic speaker. After decades of development, the AMT has firmly established itself as one of the most renowned tweeter technologies in modern high-end loudspeakers and professional monitoring systems.

While a ribbon tweeter "pushes" air, the AMT "jets" it. This fundamental difference is why it can deliver such an extraordinary sense of speed and airiness.

Pre-Purchase Information

1. Super tweeters are designed to work alongside your existing speakers; do not connect them directly to your audio source or amplifier.

2. Keep in mind that a super tweeter's output volume is usually low. If a super tweeter sounds excessively loud, it's typically a sign of poor quality.

3. Adding a super tweeter doesn't replace your current tweeter; please do not have that expectation.

4. While a super tweeter can enhance the overall sound experience, it does not guarantee "perfect" high-frequency sound. Instead, it enhances the sense of spaciousness and compensates for the high-frequency limitations of your original speakers, resulting in a better listening experience.

5. Make sure the sensitivity of the super tweeter is higher than that of your existing speakers. For example, if your horn-tweeter speakers have a sensitivity exceeding 100dB, adding a super tweeter with a sensitivity of 90dB or less wouldn't be effective.

6. The key to using super tweeters lies in experimentation and enjoyment. If you're not a serious audiophile or don't have the time to fine-tune settings, please think carefully about your purchase; achieving the best sound for your particular setup requires time and adjustments. And we recommend a minimum of 20~ hours of listening to allow your ears to adjust to the added high frequencies as well as fine tuning the adjustments.

7. Listening experiences are highly personal; it's completely normal for some individuals to notice a massive difference while others may only notice a small or no difference at all.

We highly recommend researching and getting acquainted with super-tweeters before making a purchase!

Product Features

Take Your Sound to the Next Level

A super-tweeter speaker enhances your speaker system by improving the detail, energy, density, and texture of the high-frequency range. It also broadens the stereo soundstage, providing greater width and depth. This type of speaker is a fantastic addition for those whose audio systems lack vibrancy, clarity in high frequencies, expressiveness, or adequate high-frequency output.

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Innovative Design

The DST Dual Firing AMT Super Tweeter, crafted by Aperion after extensive research and development, is a remarkable audio component designed to elevate your listening experience. This innovative tweeter projects sound in both forward and backward directions simultaneously, creating a more immersive soundstage that envelops the listener. By radiating sound from multiple angles, it enhances clarity and richness, resulting in a fuller and more dynamic auditory experience that truly brings music and sound effects to life.

High-end, classy, ​​and sophisticated

High-end, classy, ​​and sophisticated.

The Aperion DST boasts a sleek, contemporary design that exudes elegance and luxury. When you position it atop your speakers, it not only enhances the visual appeal of your audio setup but also elevates the entire ambiance, infusing the space with a sense of refinement and upscale sophistication. Its premium craftsmanship and stylish lines make it a stunning focal point in any room.

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One-to-One Pairing

Each pair of Aperion Super Tweeters have been meticulously tested and carefully matched to ensure optimal performance and consistency. This rigorous process guarantees that every unit meets high standards of quality and sound fidelity, allowing you to enjoy an enhanced audio experience.

Music vs Movies (Aperion Super Tweeter)

HiFi Music & Movis

Super tweeters can be paired with full-range bookshelf speakers, two-way bookshelf speakers, tower speakers, and home theater front or surround speakers; they are not limited to use with Hi-Fi music systems. You can also add super tweeters to a home theater system used for watching movies. Since many modern DVD and Blu-ray recordings capture frequencies well into the tens of thousands of Hertz, adding a super tweeter allows you to fully reproduce the audio effects and achieve the best possible listening experience.

Aperion Audio DST Dual Firing AMT Super Tweeter Speaker

Where should it be placed?

The optimal placement for a super tweeter speaker is on top of your loudspeaker, though positioning it immediately beside your speaker's tweeter is also an option. The primary goal is to achieve a "point source" effect, where the sound originates from a single, unified location. Additionally, because super tweeters have a faster response time, you may want to position the unit slightly farther back—while still keeping it vertically aligned with the high-frequency drivers—to ensure that the mid-range, bass, and high-frequency signals reach your ears simultaneously.

Also, just play around with the placement

Aperion_Audio_Global_Marketing

Highly acclaimed and sold worldwide

Since their introduction to the market, Aperion super tweeters have earned widespread praise from audiophiles and casual listeners alike. Their exceptional sound quality and innovative design have made them a favorite among users globally. This enthusiastic reception is a primary motivation for expanding our product lineup, leading us to develop a variety of models to cater to diverse audio preferences and enhance every listening experience.

Aperion Audio Company

Quality Commitment

Aperion Super Tweeters offer a three-year warranty and lifetime maintenance and support, showing our commitment to quality and customer satisfaction.

Fast & Free shipping*

30 day In Home Audition

Aperion Audio DST Dual Firing AMT Super Tweeter Speaker

Dual Air Motion Transformer Ribbon tweeter

Aperion's Dual Air Motion Transformer tweeter adds clarity, transient speed, and musical finesse to almost any loudspeaker. A natural fullness in the treble is exhibited; reminding us why we love high-end audio so much.

Aperion Audio DST Super Tweeter control knobs and 5-way binding posts on a white background

5-point Crossover + OFF

Select from 8, 10, 12, 14, or 16 kHz to adjust the Super Tweeter floor for optimal integration with your speaker system. When set to "OFF," the Super Tweeter will be inactive. The 8 kHz option offers the greatest overlap with your current tweeter, whereas the 16 kHz option provides minimal overlap, focusing on the higher end of the frequency spectrum. The crossover slope is set at 12 dB/octave.

Treble Adjust Knob

Too much of a good thing? Use the treble adjust to reduce the output of the Super Tweeter. Just turn the dial to adjust to your taste, down to -5dB.

Table showing treble adjust settings with crossover frequencies on a white background

Pairing the DST Super Tweeters with Your Speakers

Using the Theatrus T63S's as an example, and it's 91dB Sensitivity, to match this take a look at the chart on the left, where you can see the Crossover and Treble Adjust is set to 8k Hz and -5dB, giving you 91dB output Sensitivity, your other options include 10 kHz and -4dB, 12kHz and -3dB, 14 kHz and -2dB, or 16 kHz and -1dB, though we highly recommend you to try every setting and see what works best for your ears.

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Easy Connection

Aperion Audio Super Tweeters are external devices that connect in parallel to the binding posts of your passive speakers—just ensure that you connect positive to positive and negative to negative. The key is to experiment; avoid listening too closely. Instead, assess the sound quality from your usual listening spot to find which setting delivers the most natural, balanced, and seamless integration. Once you pinpoint the crossover setting that appeals to you the most, you can keep it for long-term use.

Graph showing the extended frequency response of our Super Tweeter on the 14 kHz and 16 kHz settings when paired with a bookshelf speaker

Fast & Free shipping*

30 day In Home Audition

Specifications & Features

Specifications

Frequency Response: 8 Khz-40 Khz

Impedance: 4 Ohms

Sensitivity: 96 dB

Crossover Points: 8K, 10K, 12K, 14K, 16K & off

Treble Adjust: 0,-1dB,-2dB,-3dB,-4dB,-5dB

Crossover Slope: 12 dB/octave

Recommended Power: 10-150 Watts

Tweeter: APERION Dual Firing Air Motion Transformer

Product Weight: 3.6 lb / 1.6 kg each

Product Dimensions: H 6.9" x W 4.9" x D 5.1" / H 175mm x W 125mm x D 130mm

Placement Location: Add on top of speakers

Shipping Weight: 8.2 lb / 3.7 kg per pair

Shipping Dimensions: L 13" x W 7.5" x H 8" / L 340mm x W 190mm x H 206mm

Dual Air Motion Transformer Ribbon Tweeter

Aperion's Dual Air Motion Transformer tweeter adds clarity, transient speed, and musical finesse to almost any loudspeaker design. A natural fullness in the treble is exhibited; reminding us why we love high-end audio so much.

5-point Crossover + OFF

Choose between 8, 10, 12, 14 or 16 kHz to set the Super Tweeter floor for the perfect blend with your speaker. The "OFF" position renders the Super Tweeter inert. The lowest setting, 8 kHz, will provide the most overlap with your existing tweeter while the highest setting, 16 kHz, will have minimal overlap, picking up at the top-end of the range. The crossover slope is 12 dB/octave.

Treble Adjust Knob

Too much of a good thing? Use the treble adjust to reduce the output of the Super Tweeter. Just turn the dial to adjust to your taste, down to -5dB.

Aluminum Alloy Metal Enclosure

The DST uses a sturdy aluminum alloy metal enclosure to withstand the fast vibrations of Its diaphragm. The aluminum alloy minimizes noise and undesriable vibrations, leaving nothing but the air movements captured in your music. The DST aluminum enclosure not only provides acoustic benefits, but it completes the aesthetically pleasing design.

Easy Connection

The Super Tweeter shares the same binding posts as the speaker you're pairing it with. It feeds off the power your main speaker is already receiving, so no need to connect directly to an amplifier. 

5-Way Gold-Plated Binding Posts

The 5-way gold-plated binding posts let you connect your speakers any which way you choose: bare wire, banana plugs, spades, round pins or flat pins. 

Warranty and Downloads

Three (3) Year Warranty and LIFETIME Support.

Super Tweeter Owners Manual

FAQs

What's in the box?

The DST Dual Firing Air Motion Transformer Ribbon (AMT Ribbon) Super Tweeter comes with a QR-manual download card, and the two tweeters.

Can only dogs and cats hear it?

It is well known that the human hearing range is 20 Hz to 20 kHz; in reality, many older adults cannot even hear frequencies above 15 kHz. Since the human ear cannot perceive frequencies exceeding 20 kHz, why is there a need for "super-tweeters" that reach 40 kHz? Consequently, many people online claim that such sounds are audible only to cats and dogs.

This is a common misconception. When we design super-tweeters capable of reaching 40 kHz, the goal is not to enable you to hear 40 kHz itself, but rather to enhance the quality of the sound within the audible range (up to 20 kHz).

To take a simple example, suppose there are two tweeters:
A: Frequency response limit of 20 kHz
B: Frequency response limit of 40 kHz
If both are made to reproduce a 15 kHz sound:

A is already approaching its frequency response limit:
- The diaphragm begins to exhibit breakup (modal vibration)
- Phase distortion increases
- Distortion levels rise

B is operating at only half its capacity, so:
- Its sound is more linear
- Distortion is lower
- Transient response is better

It is akin to comparing two cars: one with an engine capable of 200 km/h and another of 400 km/h. When both are driven at 100 km/h, the latter operates with noticeably greater ease and composure.

Thus, the true value of the Aperion Audio super tweeter lies in:
✅ A higher diaphragm breakup point
✅ A more linear operating range
✅ Lower distortion
✅ Faster transient response
✅ Superior phase characteristics
✅ Greater dynamic headroom

In other words:
The pursuit of a 40 kHz range in Aperion super tweeters is not about extending the upper limit of human hearing; rather, it is about ensuring that music reproduction within the 20 kHz range sounds more authentic, natural, and effortless.

What is the purpose of the Aperion DST Dual Firing AMT Super Tweeter?

The Aperion DST Dual Firing AMT Super Tweeter is designed to enhance the high-frequency response of your audio system, extending the frequency range up to 40 kHz. This creates greater detail, airiness, and a more immersive soundstage for both music and movies.

What types of speakers can the DST Dual Firing AMT Super Tweeter Pair be used with?

The DST Super Tweeter can be matched with any passive loudspeaker whose sensitivity is between 85 dB and 96 dB. It works with bookshelf, tower, center channel, and surround speakers, adding clarity and imaging to a wide variety of audio setups.

How do I connect the DST Dual Firing AMT Super Tweeter to my speakers?

The DST Super Tweeter connects directly to your main speakers via their binding posts. Simply connect the super tweeter in parallel with your speaker's inputs; no separate amplifier connection is required. The 5-way binding posts support bare wire, banana plugs, spade connectors and more for easy installation.

Can I adjust the crossover frequency and output of the DST Dual Firing AMT Super Tweeter?

Yes, the DST features a 5-point crossover knob (8kHz, 10kHz, 12kHz, 14kHz, 16kHz, or off) and a treble adjust knob (0 to -5dB) for precise integration and level matching with your existing speakers, allowing you to tailor the sound to your preference and system needs.

What are the primary technical specifications of the DST Super Tweeter?

Key specifications include a frequency response of 8 kHz – 40 kHz, 4 Ohm impedance, 96 dB sensitivity, recommended power handling of 10-150 Watts, and a 12 dB/octave crossover slope. The enclosure is built from aluminum alloy for acoustic and aesthetic benefits.

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Why should I choose Aperion Audio?

3 Year Warranty

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30 Day In-home Audition

The only way to truly audition speakers is in your own home. You get 30 days of pure sound experimentation, extendable up to 60. View full details

Lifetime Customer Support

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Local: (503) 598-8815
Toll-Free: (888) 880-8992

You Won't Want to Return Them, But Just in Case You Do

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Award-Winning Sound

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Quality at a Fair Price

Aperion Audio combines a sturdy design with strict quality-control standards to ensure customers receive high-quality products at reasonable prices.

Customer Reviews

Overall rating: 5.0 / 5 from 106 reviews.

Connected the DST Dual Firing AMT Super Tweeters to my Wilson Audio WATT Puppy speakers with McIntosh tube preamp and 300 watt Mac amp and WOW--the intricate detail in the delicate top end of voices and guitar strings and percussion is breathtaking. The Wilson's tweeter is already very accurate in the high end, but the Aperion DST adds several more layers of musical detail that I didn't even know was missing. The good news is that while the titanium tweeters in the Wilson's can be a bit fatiguing, the beautiful comfortable high-end layers from the super tweeters took that "edge" off and just sit back and bask in the beauty of the music. Just a wonderful experience.

DST Dual Firing AMT Super Tweeter Pair

Customer video review of DST Dual Firing AMT Super Tweeter Pair

I had no idea YouTube videos can sound so good. First of all, kudos to the TGK Trio. These accomplished jazzmen from Japan can really swing. The clarity and presence of the female vocals tricked me to think, even for only a few seconds, I was hearing a live performance. The dynamic intensity of the piano was startling in its realism. Listen through your stereo or headphones. Enjoy!

DST Dual Firing AMT Super Tweeter Pair

Customer photo review of DST Dual Firing AMT Super Tweeter Pair

Smooth transaction like normal, very nice build wires they look nice and they sound really great especially with the Aarion tweeters. I’m very happy… Seem like the tweezers themselves have more fine. Sound to them now.

DST Dual Firing AMT Super Tweeter Pair

Customer photo review of DST Dual Firing AMT Super Tweeter Pair

The AMT super tweeters have added the extra treble extension I was looking for. They did require a bit of experimentation to get them to sound right. I might have been experiencing some comb filtering before finding the right placement. My son made two platforms with a 3d printer to place the super tweeters on top of my Martin Logan Ascent speakers. I’m not sure how the speaker system measures in room, but the system sounds great. Thanks, Bill

DST Dual Firing AMT Super Tweeter Pair

Customer photo review of DST Dual Firing AMT Super Tweeter Pair

Having old DCM timeframe speakers I was going to sell, since they were unused for many years, I saw the AMT ST. WOW, along with the Yamaha sub I was approaching HIFi. Not there yet. I had heard of FLAC files, but my old Sony BRay could not play them off a USB stick. MP3 yes. So I researched and wound up buying a Audiolab D9. It has everything in one box for $1200. ( Shout out for HiFi Heaven A+). State of the art DAC, they are at this for 30+ years now, every kind of I/O connection you could want, a clean Pre-amp, can play off a USB stick, onboard hardware for upsampling (on or off), 5 filters, no EQ (not needed). I know you can buy a DAC player/streamer for 200-300 and they may be OK. Up to $1000 its much better. At 1200 the D9 is remarkable, sound is pure HiFi musicality. Audiolab put a lot into this unit including a custom linear power supply, and it runs pretty warm/hot. My Adcom 550 amp may be a weak link. The Sony is used as a transport only, and can pass both CD's and Flac files via CoAx to the D9. So getting back to the AMT supertweets, they are incredible, still revolutionary many years after Dr. Heil invented them. Asperion has tamed the technology to refine it and make it musical. The first AMT tweets I heard 50 years ago were crazy sounding but not musical, too brash and edgy, well ugly even. If you want to upgrade your system and can afford them, just buy them, They are just that good. Hopefully your rig can give them a high fidelity signal to work with.

DST Dual Firing AMT Super Tweeter Pair

Well honestly I don't know if these things are really doing anything... when I put my ear right up to them I can hear a very faint sound coming from them, but regardless of how I have the volume or crossover set they barley have any volume.. I'm not sure If it's enhancing my speakers or not, but I like to believe it is even if it's only psychosomatic.

DST Dual Firing AMT Super Tweeter Pair

Well when I was in college another student in my dorm asked to borrow my turntable, as he had bought speakers and needed a source (pre CD days circa 1975 or so). Well I lent him my Phillips and he invited me to listen to his system. His new speakers were the original Heil AMT's. Looked like a sub with a grill on top. Inside the grill was a massive V shaped structure , with the V facing toward listener. Each side of the V had cotter pin like metal pins coming out of the central post the inside of the V extending out to form the V. Maybe 20 pins per side. To visualize this put your arms outward in front of you and make your fingertips touch, you V. The whole thing had a massive magnet behind it. Well I never heard anything like it. If somebody was ringing a bell near your head you knew it was live, or if they were jiggling a set of keys in a room you knew they were in the room. Same with the AMT's startling sound. Well the speakers were not so refined in their spectrum, treble overkill but still amazing. Well Asperian took a good idea and refined it,or tuned it and you get to fine tune it. For years I didnt listen to music but had a large CD collection. My speakers are DCM time frames 500. Not terrible, but nice sound stage, highs and lows so so. So I got a Yamaha sub 30 years ago and that was OK. To fix the high end was not as easy until I got the AMT's, increbible. You will hear detail you never heard before with clarity and open sound stage, not point source. Not cheap but if your speakers have decent mids and maybe a sub, this addition will be better then buying 1000 new speakers. To those who say their hearing is limited high frecuency so why go super T, they dont understand how sound is processed in the brain. Ray W.

DST Dual Firing AMT Super Tweeter Pair

I Love what the super tweeters did to my system. The music and vocal tracks tighten in to focus. My Wilson speakers sound even better did not think possible WOW! Thanx Tracy

DST Dual Firing AMT Super Tweeter Pair

It was a great experience learned of aperion on a you tube channel and thought I would give them a try price's were good and customer sevice even better

DST Dual Firing AMT Super Tweeter Pair

SUPER TWEETER I'M LOVIN' THIS LAST WEEK I'VE PURCHASED THE SUPER TWEETER OPEN BOX. I'M LISTENING A PAIR OF THE T65 TOWER PSB SPEAKERS ALTHOUGH THEY SOUND TERRIFIC I BELIEVE THEY NEEDED TO ME A LITTLE MORE HELP IN THE MIDRANGE AREA AND IT IS ADVERTISED WHAT THEY SAY IT CAN DO IT VERY EASY TO MAKE ADJUSTMENTS TO YOUR LIKENING VERY NICE ADDITION TO MY SYSTEM

DST Dual Firing AMT Super Tweeter Pair

The customer service person that I spoke to was so helpful. I did not have to wait too long to speak to someone and they were able to help me in a timely manner

DST Dual Firing AMT Super Tweeter Pair

Fast, friendly and great customer service by Collin. The speakers are excellent and a great addition to my system.

DST Dual Firing AMT Super Tweeter Pair

Huge improvement The shipping was quick. I am thrilled with the product. These tweeters take my sound to the next level.

DST Dual Firing AMT Super Tweeter Pair

Customer photo review of DST Dual Firing AMT Super Tweeter Speaker Pair

I was like a kid on Christmas, who finally gets to open the gift. The DST sounded great out of the box. Haven't gotten a chance to give it any serious listen because of my busy schedule. But whenever I fire it up, it gives me such joy. Sparkle, air, and ambiance are what it adds to my system – something I miss going from Magnepans to a boxed speaker. The rep I chatted with was really helpful. Great company, great peeps!

DST Dual Firing AMT Super Tweeter Speaker Pair

Amazing product and flawless customer service. Last year I ordered a pair of RST Aluminum Ribbon Super Tweeter and I really enjoyed but I thought why don’t upgrade to the DST Dual Firing AMT Super Tweeter? I had a pleasure to chat with Oliver and he made everything so smooth, so I returned the RST’s and paid the difference on the DST’s. Worth every penny and I’m feeling in love with them, you can definitely feel the difference. Thank you team Aperion, you guys rock.

DST Dual Firing AMT Super Tweeter Speaker Pair

Customer photo review of DST Dual Firing AMT Ribbon Super Tweeter Speaker Pair

Brought my Old McIntosh LS360 speakers back to life....As the capacitors age in the speaker crossovers highs diminish. The ability to fine tune the Super tweeters to how you like them makes this a no brainer if you want to upgrade the sound spectrom from your speakers.

DST Dual Firing AMT Ribbon Super Tweeter Speaker Pair

What an amazing piece of kit I wish I had purchased them years ago biggest upgrade I have ever done so much air and detail but smooth at the same time unreal 🤯🤯🤯🤯

DST Dual Firing AMT Ribbon Super Tweeter Speaker Pair

What an incredible Audiophile value! These folks manufacture and sell quality gear at a vey reasonable price. Free 3-Day Shipping - it doesn't get any better than that. Thank you!

DST Dual Firing AMT Ribbon Super Tweeter Speaker Pair

Nice addition to Rogers LS3/5A Well constructed. With crossover and level controls was able to find an optimum setting that “breaths” the highs with my Rogers LS3/5A .

DST Dual Firing AMT Ribbon Super Tweeter Speaker Pair

Aperion. There is no substitute. Aperion, unfortunately not well known in the speaker world, produces the BEST line of speakers (in their price point) out there. I have a 7.2.6 Atmos set up with 3 super tweeters for the front towers and the center channel that express every nuanced note. From the highest pitch to thunderous bass that rattles my windows. These speakers are INCREDIBLE! I've invested roughly $6,000 on a home theater that makes all our friends jealous. We practically never go to the movies anymore. Our living room is a theater. And believe it or not, my wife approved every step of the way. If I EVER buy another set of speakers they will have a logo with 3 vertical lines, Aperion.

DST Dual Firing AMT Ribbon Super Tweeter Speaker Pair

Crisply extended high-end range of my existing speakers Really extended the high-end range of my old Advent speakers - very happy with what these Aperion tweeters have added to their sound.

DST Dual Firing AMT Ribbon Super Tweeter Speaker Pair

I’m still experimenting with settings but I love what it has contributed to my system. The sound has a definite airiness and sparkle that wasn’t represented before the super tweeters were added. It’s really great to tinker with the crossovers and gain settings to complement the existing speaker perfectly. The build quality of these is terrific, very substantial and heavy for their size. Also I used the 4’ cables as well and worked great on my towers. Thanks much

PREORDER - Aperion DST Dual Firing AMT Ribbon Super Tweeter Speaker Pair

The best thing about the Aperion super-tweeters is their adjustability, both in terms of low-cut and gain. It becomes very easy to blend them in with an existing speaker set-up. I put mine on top of an old pair of Snell JIIs, whose tweeters still work reasonably well, but don't provide quite enough of a top end. The Aperion super-tweeters have solved that problem perfectly.

DST Dual Firing AMT Ribbon Super Tweeter Speaker Pair