The AGD Gran Vivace Monoblock is the new addition to the AGD GanTubeTM
Hi-End Power Amplifiers family. First to use the unique GaNTube™
technology with Gallium Nitride Power-Stage integrated into a Vacuum
Tube, the AGD amplifiers are the most technologically advanced design
available in the market today. The AGD “Gran Vivace” is rated 400W on
4ohm and it is characterized by an outstanding 50A peak output driving
capability that will satisfy the most demanding loudspeakers and fill
with musical sound pressure also the largest audio rooms. To achieve
these performances, we have designed a new GaNTubeTM component, the AGD GaNTube KT120, larger and more powerful than its sibling AGD GaNTube KT88 MKii.
achieve the highest-performance in audio reproduction, switching
topologies must achieve nearly ideal switching waveforms, completely
oscillation-free, to minimize distortion but most importantly, to
preserve the harmonic content present in the original input signal and
avoid the superimposition of any additional artifacts that alter the
overall spectrum and the spatiality of the music reproduction. The
Gallium Nitride power MOSFETS used in the GaNTubeTM
power-stage simplifies this challenge through its ability to efficiently
switch at much higher slew rates than any silicon-based power MOSFET,
with almost perfect (book-like) behavior and oscillation free switching.
In this new AGD GaNTubeTM
120KT, a pair of powerful 600V rated Gallium-nitride power MOSFETs are
at the core of the design. These new advanced components are the key to
the reference level performance of the AGD “Gran Vivace” Monoblocks.
Thanks to the improvement in components, and PCB layout (tested and
introduced recently with the AGD GaNTubeTM KT88 MKii), we
achieved the goal to operate also this much larger power-stage at
800kHz, with a direct and positive impact on the overall already
outstanding sonic and musical performances.