AGD Production AGD GaNTube 88KT MKIII
Introducing the new AGD “GaNTube88MkIII” – a culmination of two years’ relentless development and an unwavering commitment to acoustic perfection. This latest iteration marks a significant leap forward in sound quality, a result of tireless refinement and long hours of attentive listening.
Central to this advancement are two fundamental components of the GaNTube amplifier module: the PWM stage, (specifically the Voltage-Time converter block), and the output filter – now entirely re-engineered with more advanced materials and new design techniques.
The “GaNTube88MkIII” retains its 800KHz operating frequency, but with dramatic improvements.
The PWM and LC stages have been meticulously enhanced, resulting in reduced distortion, lowered noise, expanded bandwidth, and lightning-fast response times.
Rated at 250W 4Ω, the “GaNTube88MkIII” delivers its maximum RMS output power when paired with AGD Vivace MKII mono-blocks. With the AUDION MKII mono-blocks, the power is limited by the internal power supply, at 200W.
With the new MKIII, we have extended the frequency response of the power stage, now flat up to 60KHz, and by a combination of layout improvement and the re-engineering of the output filter, we managed to also significantly increase the slew rates performances.
This evolution enhances the sonic landscape, presenting an immersive musical journey literally out of this world.
Experience audio in its purest form by upgrading the AUDION and the VIVACE to the GanTube88KT MKIII
AGD: Where innovation meets excellence and exceeds all expectations.
Lee de Forest’s triode tube (Audion) from 1906.
- Top metal electrode is the plate.
- Grid is the bent metal wire partly visible.
- The most advanced power stage in high-end audio.
- Gallium Nitride MOSFET-based power stage.
- Fully integrated in a Glass Tube (Octal Socket)
- Extended bandwidth (±0.5db 0-50KHz)
- 200W, 4ohm (>30A max current capability).
- 800KHz PWM (GaNTubeKT88 MKII)
- 40kOhm input impedance.
- <-140db noise floor.
2644 Via Valdes
Palos Verdes Estates
90274 CA (USA)
agdsupport@agdproduction.com
- AGD Audion (any version)
- AGD Vivace (any version)
- AGD Gran Vivace
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Specifications
- THD+N 10W/1KHz
- <0.003 %
- Maximum Output Power 20Hz÷20KHz, 8Ω
- 125 W
- Audio Bandwidth ±0.1dB
- 20 Hz - 20 KHz
- Bandwidth ±0.5dB
- 0 Hz - 50 KHz
- Noise level (100mVRMS input)
- -140 db
- GaN Power Module PWM Frequency
- ~800 kHz
- Dimensions
- 118 mm x 50 mm
- Weight
- 135 g
Manufacturer's Description — AGD Production
Introducing the new AGD “GaNTube88MkIII” – a culmination of two years’ relentless development and an unwavering commitment to acoustic perfection. This latest iteration marks a significant leap forward in sound quality, a result of tireless refinement and long hours of attentive listening.
Central to this advancement are two fundamental components of the GaNTube amplifier module: the PWM stage, (specifically the Voltage-Time converter block), and the output filter – now entirely re-engineered with more advanced materials and new design techniques.
The “GaNTube88MkIII” retains its 800KHz operating frequency, but with dramatic improvements.
The PWM and LC stages have been meticulously enhanced, resulting in reduced distortion, lowered noise, expanded bandwidth, and lightning-fast response times.
Rated at 250W 4Ω, the “GaNTube88MkIII” delivers its maximum RMS output power when paired with AGD Vivace MKII mono-blocks. With the AUDION MKII mono-blocks, the power is limited by the internal power supply, at 200W.
With the new MKIII, we have extended the frequency response of the power stage, now flat up to 60KHz, and by a combination of layout improvement and the re-engineering of the output filter, we managed to also significantly increase the slew rates performances.
This evolution enhances the sonic landscape, presenting an immersive musical journey literally out of this world.
Experience audio in its purest form by upgrading the AUDION and the VIVACE to the GanTube88KT MKIII
AGD: Where innovation meets excellence and exceeds all expectations.
Lee de Forest’s triode tube (Audion) from 1906.
- Top metal electrode is the plate.
- Grid is the bent metal wire partly visible.
- The most advanced power stage in high-end audio.
- Gallium Nitride MOSFET-based power stage.
- Fully integrated in a Glass Tube (Octal Socket)
- Extended bandwidth (±0.5db 0-50KHz)
- 200W, 4ohm (>30A max current capability).
- 800KHz PWM (GaNTubeKT88 MKII)
- 40kOhm input impedance.
- <-140db noise floor.
2644 Via Valdes
Palos Verdes Estates
90274 CA (USA)
agdsupport@agdproduction.com
- AGD Audion (any version)
- AGD Vivace (any version)
- AGD Gran Vivace
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Authorized dealers for AGD Production AGD GaNTube 88KT MKIII
- 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