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Authorized dealers for AGD Production AGD GaNTube 120KT MKIV

  • Audio Gallery — online and in-store — Las Rozas de Madrid, Comunidad de Madrid, Spain (website)
  • Audiophile Zone — online and in-store — Baywood-Los Osos, California, United States (website)
  • Delve Audio — in-store — Caldwell, New Jersey, United States (website)
  • Dr Vinyl — in-store — Middle River, Maryland, United States (website)
  • e11even stereophonic — in-store — Atlanta, Georgia, United States (website)
  • ECRIN DE FRANCE — in-store — Roubaix, Hauts-de-France, France (website)
  • Hifi-Connect France — in-store — Perpignan, Occitanie, France (website)
  • Indie Hifi — in-store — New Farm, Queensland, Australia (website)
  • Maco — online and in-store — Old Toronto, Ontario, United States (website)
  • Next Level HiFi — online and in-store — Wayne, Illinois, United States (website)

and 4 more verified dealers

AGD Production AGD GaNTube 120KT MKIV #1
AGD Production AGD GaNTube 120KT MKIV variant 1

AGD Production AGD GaNTube 120KT MKIV

United States flag
  • The new AGD GaNTubeTM 120KT MKIV represents the fourth generation of the AGD GaNTube platform since its introduction in 2020. It is the result of a continuous journey of innovation and refinement, developed to merge perfection and beauty in the art of audio reproduction.
  • At the core of the design is a pair of the latest and most advanced 650V-rated HEMT Gallium Nitride power MOSFETs. These new-generation devices are fundamental to the improved efficiency, greater power capability, speed, precision, and reference-grade musical performance of the AGD Gran Vivace MKIV
  • Refined thermal management, an improved low-noise linear regulator stage, and higher-reliability passive components have each been carefully engineered to elevate overall performance, while preserving the elegance, simplicity, and upgradeability that define the AGD design philosophy.
  • The refinement of upper-frequency operation delivers a direct and positive impact on the overall sonic and musical presentation, with exceptional realism, transparency, and natural expression through the mid and high frequencies.
  • The GaNTube 120KT MKIV is a refined expression of AGD’s vision, pushing performance, transparency, and musical realism to a new level.

Technical Highlights


  • New Gallium Nitride power stage based on the latest 650V GaN HEMT HV MOSFET devices.
  • Enhanced thermal design.
  • Improved low-noise linear regulator stage.
  • Redesigned power stage with optimized layout.
  • New linear supply rails with increased capacitor bank and long-life, high-reliability-grade passive components.
  • 400W into 4 ohms.
  • 800kHz PWM switching frequency.
  • 60A peak current capability.
  • Class-D amplifier topology.
  • Designed and manufactured in California, USA.
  • New 600W continuous, fully GaN-based power supply, capable of delivering up to 6kW peak power (100ms, 60Apk).
  • The new advanced AGD PS design has a resonant topology for the primary stage and a dual-stage PFC front-end, (which ensures and optimal sinusoidal current absorption and enhanced voltage supply stability).
  • Unlike conventional designs, this 100% GaN implementation provides ultra-fast transient response, dramatically reduced switching losses, and exceptional power density.
  • The result is an amplifier that responds instantly to dynamic demands while maintaining absolute control and low noise.

2644 Via Valdes


Palos Verdes Estates


90274 CA (USA)


agdsupport@agdproduction.com


  • AGD Gran Vivace
Read full description
View at AGD Production
Product details

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Manufacturer's Description — AGD Production

  • The new AGD GaNTubeTM 120KT MKIV represents the fourth generation of the AGD GaNTube platform since its introduction in 2020. It is the result of a continuous journey of innovation and refinement, developed to merge perfection and beauty in the art of audio reproduction.
  • At the core of the design is a pair of the latest and most advanced 650V-rated HEMT Gallium Nitride power MOSFETs. These new-generation devices are fundamental to the improved efficiency, greater power capability, speed, precision, and reference-grade musical performance of the AGD Gran Vivace MKIV
  • Refined thermal management, an improved low-noise linear regulator stage, and higher-reliability passive components have each been carefully engineered to elevate overall performance, while preserving the elegance, simplicity, and upgradeability that define the AGD design philosophy.
  • The refinement of upper-frequency operation delivers a direct and positive impact on the overall sonic and musical presentation, with exceptional realism, transparency, and natural expression through the mid and high frequencies.
  • The GaNTube 120KT MKIV is a refined expression of AGD’s vision, pushing performance, transparency, and musical realism to a new level.

Technical Highlights


  • New Gallium Nitride power stage based on the latest 650V GaN HEMT HV MOSFET devices.
  • Enhanced thermal design.
  • Improved low-noise linear regulator stage.
  • Redesigned power stage with optimized layout.
  • New linear supply rails with increased capacitor bank and long-life, high-reliability-grade passive components.
  • 400W into 4 ohms.
  • 800kHz PWM switching frequency.
  • 60A peak current capability.
  • Class-D amplifier topology.
  • Designed and manufactured in California, USA.
  • New 600W continuous, fully GaN-based power supply, capable of delivering up to 6kW peak power (100ms, 60Apk).
  • The new advanced AGD PS design has a resonant topology for the primary stage and a dual-stage PFC front-end, (which ensures and optimal sinusoidal current absorption and enhanced voltage supply stability).
  • Unlike conventional designs, this 100% GaN implementation provides ultra-fast transient response, dramatically reduced switching losses, and exceptional power density.
  • The result is an amplifier that responds instantly to dynamic demands while maintaining absolute control and low noise.

2644 Via Valdes


Palos Verdes Estates


90274 CA (USA)


agdsupport@agdproduction.com


  • AGD Gran Vivace
AGD Production logo

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Authorized dealers for AGD Production AGD GaNTube 120KT MKIV

  • Audio Gallery — online and in-store — Las Rozas de Madrid, Comunidad de Madrid, Spain (website)
  • Audiophile Zone — online and in-store — Baywood-Los Osos, California, United States (website)
  • Delve Audio — in-store — Caldwell, New Jersey, United States (website)
  • Dr Vinyl — in-store — Middle River, Maryland, United States (website)
  • e11even stereophonic — in-store — Atlanta, Georgia, United States (website)
  • ECRIN DE FRANCE — in-store — Roubaix, Hauts-de-France, France (website)
  • Hifi-Connect France — in-store — Perpignan, Occitanie, France (website)
  • Indie Hifi — in-store — New Farm, Queensland, Australia (website)
  • Maco — online and in-store — Old Toronto, Ontario, United States (website)
  • Next Level HiFi — online and in-store — Wayne, Illinois, United States (website)

and 4 more verified dealers

Audio Gallery logo
Audiophile Zone logo
Delve Audio logo
Dr Vinyl logo
e11even stereophonic logo
ECRIN DE FRANCE logo
Hifi-Connect France logo
Indie Hifi logo
Maco logo
Next Level HiFi logo