Wednesday, November 7, 2018

AGD Production Vivace GaNTube Mono Amplifier

$15000 /pr

The AGD Vivace Monoblock, is the most advanced Hi-End Power Amplifier in the market. First to use the unique GaNTube™ technology with Gallium Nitride Power-Stage integrated in a Vacuum Tube. The Gallium nitride components are the key to the reference level performance of the AGD Vivace Monoblocks.

To 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.

Design Philosophy

With the seamless ability to drive any loudspeakers, 200W of power, 48,000µF of super audio grade capacitor reservoir, and the fastest slew-rate, the GaNTube™ Technology delivers the purest sonic experience.

Thanks to the Gallium-Nitride power stage intrinsic characteristics, the virtually stray-inductance free package, and a state of the art layout of the power module, the rise time and fall time of the Vivace's GaNTubeTM power stage are fully symmetrical at ~15ns. The output waveform at the switching node of the Gallium-Nitride power stage (pre-LC filter) is completely oscillation free even with a slew rate of 3700V/µs!

The combination of low noise design technique implemented and the best practice for the internal board layout, the RF quality BNC connectors for the analog signals, are the key contributors of the excellent noise floor of the Vivace Monoblocks and extremely low distortion.

Main Features & Characteristics:

Single Channel Class-D Amplifier
Fully integrated in Vacuum Tube Enclosure
Gallium Nitride MOSFET Power Stage
IRS20957 Controller PWM IC
Up to 200W 4Ω
Up to 768KHz PWM
≥ 94% Efficiency
≤ -120db
OVT, OVC and DC protection

Technical Specs

Nominal Output Power at 0.01% THD+N, 20Hz÷20KHz, 4Ω - 100W

Maximum Output Power at 0.1% THD+N, 1KHz 4Ω - 200W

THD+N 10W/1KHz - 0.005%

Bandwidth ±3dB - 5Hz÷100KHz

Efficiency% - >94%

Output Noise (A-weighted) - ≤ 45μV

PWM Frequency - Up to 768KHz

Dynamic Range - 120dB

Dimension - 11"x11'x5" (279x279x127mm)

Weight - 22lbs (10kg)

Input Voltage - 110-240V (user selectable)