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DUO GT Floorstanding Loudspeakers By Avantgarde Acoustic
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Product Summary:
Discover the DUO GT “Grande Twin,” a pinnacle in horn system evolution from Avantgarde Acoustic. Enhanced with advanced drivers and a powerful bass amplifier, it delivers superior sound and customizable audio for an unparalleled listening experience.... Click To Read More
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Burn-In Time 100 Hours
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DUO GT Floorstanding Loudspeakers By Avantgarde Acoustic


Discover the DUO GT “Grande Twin,” a pinnacle in horn system evolution from Avantgarde Acoustic. Enhanced with advanced drivers and a powerful bass amplifier, it delivers superior sound and customizable audio for an unparalleled listening experience.


Product Description

Discover the DUO GT “Grande Twin,” a pinnacle in horn system evolution from Avantgarde Acoustic. Building on a legacy since 1993, this third-generation model features an innovative spherical horn design, enhanced with the advanced XM2 midrange driver. Experience superior sound with the XT3 Supertweeter, borrowed from the acclaimed TRIO, and the powerful XB12 bass drivers, featuring massive voice coils inspired by the SPACEHORN. Upgrade your audio experience with the DUO GT “Grande Twin.”


Experience the ultimate in performance and dynamic elegance with the DUO, featuring an impressive 670 mm spherical wave horn that delivers a frequency response up to 170 Hz. In the captivating world of spherical wave horns, size truly matters. The larger the horn, the deeper the lower bandwidth, immersing the listener in a whirlwind of superior audio performance.

Discover the cutting-edge EvolutionAA XM2 midrange driver, featuring a 170 mm chassis and a powerful Alnico magnet, designed for extensive linear diaphragm excursion. Its innovative “soft mesh compound” diaphragm utilizes a durable mesh carcass, sealed with a damping elastomer coating. This unique combination creates a broadband absorption effect, effectively dampening partial vibrations and reducing unwanted harmonics. The DUO GT also incorporates the XT3 tweeter from the renowned TRIO G3, with a lighter annular diaphragm that extends the frequency range up to 28,000 Hz at a sensitivity of 107 dB. This results in greater clarity, focus, and a fuller, more natural sound. Enhance your audio experience with these advanced components.

Elevate your audio experience with two powerful XB12 drivers in a bass-reflex configuration, nearly doubling the dynamic headroom compared to previous models. The voice coil size has been increased from 100 mm to an impressive 153 mm. This massive 6-inch motor structure delivers superior power factor and handling capabilities while significantly reducing thermal compression. Enjoy enhanced performance and richer, more dynamic bass with these advanced upgrades.

The G3-1000 bass amplifier delivers an impressive 1,000 watts of power and features an advanced digital sound processor. Its new user interface makes it easy to adjust the sound to your personal preferences and ensures seamless integration into any room. Experience powerful, customizable audio with the G3-1000 bass amplifier.


Excellence reinvented.

The G3 Series takes the bionic horn principle to new heights, offering unparalleled horn performance with remarkable efficiency and an extensive transmission range. Experience the ultimate in audio excellence with the advanced design and superior sound quality of the G3 Series.

107dB Efficiency

Introducing the new Evolution driver generation, designed for extended dynamics and even purer sound. Experience superior audio clarity and enhanced performance with this cutting-edge technology.

200 mm – Supertweeter

Experience the innovative XT3 tweeter unit, featuring a new Long Throw Horn and an extended Supertweeter frequency range. Enjoy record-low distortion values for unparalleled audio clarity and precision.

670 mm Medium tone spherical wave horn

Discover the new and improved XM2 DUO Evolution driver, boasting 107dB efficiency and advanced 18 Ohm Omega technology. Enjoy enhanced audio performance and superior sound quality with this cutting-edge driver.


Introducing two cutting-edge 12-inch XB12 drivers, featuring a 152mm voice coil and an impressive 1.15 Tesla flux density across a 480mm voice coil length. These drivers boast a diaphragm composite made of long fiber paper and carbon fiber for superior performance and durability. Experience enhanced audio quality and powerful bass with these advanced components.

Color worlds.

The range of stylish color and design options to personalize your dream speaker setup even further. Achieve the perfect aesthetic to complement your space and elevate your listening experience to new heights.

Coplanar driver alignment.

Experience audio perfection with the G3 Series, where all drivers are aligned on a single axis. This ensures that the acoustic centers are consistently on the same plane, maintaining identical distances to the listener. As a result, signals from the tweeter, midrange, and woofer sources arrive simultaneously, delivering accurate and immersive sound reproduction.

Modular technology.

Experience a system where all electronics are conveniently housed in easily replaceable technology modules. This design ensures effortless expansion or upgrades to your system, even after years of use. Enjoy the flexibility to enhance your setup according to your evolving preferences and needs.

Current amplifier.

Introducing the patented iTRON current fully active engine, designed to achieve precise control over membrane vibrations for optimal sound quality. Experience the pinnacle of audio performance with this advanced technology, ensuring an unparalleled listening experience.

1000 Watt Bass Output stage

The integrated power amplifier boasting 1,000 watts of amplification power, paired with processor-controlled active filters for enhanced audio performance. Navigate effortlessly through the new G3 user interface for easy programming and customization. Elevate your audio experience with powerful amplification and intuitive control options.

Everything is possible


Discover a curated collection of 12 carefully selected shades to adorn your horn speakers. These timeless and expressive colors, chosen with care, seamlessly integrate into your interior design, enhancing the beauty of your space while showcasing the elegance of the horns.

Ein Lautsprecher. Zwei Version.


Discover the passive version, expertly crafted for seamless operation with external HiFi amplifiers. With an impressive 109 dB efficiency and 27 ohms impedance, this speaker offers effortless compatibility and is perfectly suited for use with low-power amplifiers. Elevate your audio experience with the ideal speaker companion for the finest high-end amplifiers available.


Introducing the ITRON version, where the amplifiers are seamlessly integrated into the speaker, eliminating the need for additional external power amplifiers. Avantgarde has pioneered integrated electronics based on groundbreaking electro-physical principles, setting new standards in amplifier technology. Avantgarde are proud to be the first manufacturer worldwide to successfully implement this revolutionary approach, resulting in an unparalleled sound experience that is simply heavenly.

Module technology for diversity & timelessness.

Discover the versatility of each model, featuring a replaceable technology module connected to the speaker via a multi-pin power connector. Upgrade your passive loudspeaker effortlessly with ITRON technology or the wireless module for enhanced functionality.

Future-proof your investment with the ability to upgrade to the latest digital technology available, ensuring longevity and sustainability for generations to come.

Coplanar alignment of the drivers.

Experience unparalleled audio precision with avantgarde’s speaker design, where all drivers are aligned on a single axis. This ensures that the acoustic centers are consistently on the same plane, providing a uniform listening experience with identical distances to the listener from each driver’s acoustic center.

Driver Technology


For over three decades, Avantgarde’ve dedicated ourselves to the advancement of horn technology, ensuring unparalleled expertise and innovation in the field.


This wealth of experience has led to numerous groundbreaking innovations, setting us apart in the industry.


Avantgarde utilize premium materials and adhere to the principles of top-tier German engineering throughout the development and production processes.


200mm Tweeter horn

  • Lower cut-off frequency with substantially increased acoustic power
  • Smaller and lighter membrane
  • Linear phase response less than 50 degrees (4,000 – 20,000 Hz)
  • 28.000 vibrations per second


670mm Bullet wave horn

  • Compression ratio tending towards zero
  • Large linear stroke
  • Impedance from 17 Ohm
  • Spheric -Dome diaphragm with AirGate air filter technology
  • 107dB Sound pressure

The perfect crossover.

Featuring the Avantgarde SphericLowCut filter, Airgate technology, and PolarizationPlus circuit, avantgarde’s passive crossover embodies cutting-edge innovation. Each component is meticulously crafted with the highest quality materials, including the NatureCap capacitor. Handmade in Germany, this intricately designed capacitor utilizes precisely rolled aluminum foil electrodes and a cellulose fiber compound impregnated with biological oils as a dielectric. With a size approximately 25 times larger than capacitors from the XD series, the NatureCap is securely fastened to the circuit board with specially manufactured brackets.

XB12 Bass driver

Introducing the revolutionary drive system developed for the DUO GT, featuring significant enhancements from its predecessor. With an expanded voice coil from 100mm to 153mm and a robust 6-inch motor structure, avantgarde’ve achieved exceptional power factor and handling while minimizing power compression. This motor structure features two premium-grade magnets, magnetized in Europe’s largest 200,000-volt facility. With a 1.15 Tesla flux density, the force of the permanent magnet is transmitted to a voice coil circumference of 480mm, marking a remarkable increase of over 50% from the previous model. Crafted from low-carbon steel, the pole plates designed for the XB12 ensure high linearity even at maximum diaphragm excursion. The centering mechanism boasts a patented dynamic profile with a progressive surround design made of low-loss NBR (acrylonitrile butadiene rubber), ensuring rapid and precise transient response. The diaphragm is composed of a composite material combining long-fiber paper and carbon fiber, offering exceptional strength and torsional stiffness for accurate pistonic excursion during transient and decay events. The XB12’s new SingleFrame chassis features robust die-cast aluminum cantilevers that envelop the magnet, creating a stable composite of materials around the motor structure’s moving components. Representing an Avantgarde bass reference, the XB12 exemplifies the uncompromising excellence of the G3 series.

Bass amplifier

The active subwoofer of the DUO GT is powered by the G3-1000 power module, boasting a built-in 1,000-watt amplifier to accommodate even the most demanding EQ settings. Direct connection to integrated amplifiers, power amplifiers, or receivers is facilitated through speaker-level input terminals. Additionally, line-level inputs are available via XLR terminals. The signal tap is not only high-impedance but also balanced and transformer-coupled, maintaining a floating circuit ground to prevent hum loops and simplify connection to balanced and bridged amplifier designs. All electronics are protected by a cutting-edge E-Fuse circuit, offering faster and safer protection compared to conventional fuses, while also optimizing sound quality.

Digital crossover.

The bass power amplifier showcases an advanced digital sound processor, providing unparalleled precision and bit accuracy surpassing analog technology. Avantgarde Control Software enables the programming of additional settings like high and low pass filters, equalizers, and more. This newly redesigned user interface ensures intuitive operation, enabling effortless adjustment of parameters to accommodate room acoustics or personal listening preferences. Perfect for enhancing your listening pleasure, it’s a must-have for any music lover looking to optimize their sound.

Unlock the power of precise audio customization with this cutting-edge 8-band equalizer housed within the DSP. Tailor your bass response to perfection, whether you’re fine-tuning for different music genres or optimizing for your unique room acoustics. Experience unparalleled control over your sound, elevating your listening experience to new heights.



DUO GT (iTRON) – Roy Gregory (2023, English)



  • Frequency range satellite: 170-28.000 Hz
  • Frequency range Subwoofer: 18-350 Hz
  • Load capacity: 100 Watt
  • Efficiency: (1Watt/1m) > 107 dB
  • Crossover frequencies: 170/3.500 Hz
  • Nominal impedance: 18 Ohm
  • Recommended amplifier power: > 10 Watt
  • Recommended room size: > 20 qm
  • Coplanar driver alignment: Yes
  • OmegaDrive: Yes
  • AirGate: Yes
  • NatureCap incl. PolarizationPlus circuitry: Yes


  • Horntyp Spherical: horn
  • Horn opening angle: 180 Degree
  • Horn diameter midrange: 670 mm
  • Horn diameter tweeter range: 200 mm


  • Diameter midrange: 170 mm / 7 Zoll
  • Diameter tweeter range: 25 mm / 1 Zoll


  • Driver size: 300 mm / 12 Zoll
  • Driver quantity: 2x XB12
  • Voice coil diameter: 153 mm
  • Flux density: 1,15 Tesla / 480 mm
  • Pole plate: low carbon steel
  • Membrane material: Paper/carbon fiber Compound


  • Output power (RMS): 1x 1000 Watt
  • Digital crossover: DSP
  • Equalizer: 8 Tape
  • Digital room adjustment: yes
  • Inputs: 1x SPKR + 1x XLR


  • Hochleistungs-Multikontaktstecker: yes
  • Partially active design: yes
  • Fully active version with ITRON amplifier: yes


  • ITRON voltage/current converter Technology: patent pend
  • Fully balanced circuit: Ja
  • Single stroke circuit: yes
  • Zero Feedback: yes
  • Without negative feedback: yes
  • Power: 2 x 100 Watt


  • Dimensions width: 670 mm
  • Dimensions depth: 696 mm
  • Dimensions height: (+/- 15 mm) 1.732 mm
  • Weight: 108,5 kg

Download DUO GT manual


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