AGD Gran Vivace Monoblock Amplifier
Best high-end monoblock for audiophiles driving demanding, power-hungry speakers.
Experience unparalleled audio with the AGD Gran Vivace Monoblock Amplifier, a revolutionary Class D amplifier featuring unique GaNTube™ technology. This amplifier integrates Gallium Nitride MOSFETs into a vacuum tube for exceptional fidelity. Delivering 400W into 4Ω with a remarkable 50A peak output current, it effortlessly drives demanding speakers in large rooms. Its advanced design ensures high efficiency, low noise, and pristine signal integrity, all within an avant-garde industrial aesthetic. The Gran Vivace offers a truly immersive and realistic listening experience for discerning audiophiles.
$18999.00
Owner Satisfaction
4.8
/ 5
Category Rank
168
/ 1719
#168 in Power Amplifiers
Price vs Category Average
+130%
Above average
Maximum Output Power (4Ω)
400
/ W
Who it's for
- Audiophiles seeking ultra-fast transient response and pristine signal clarity
- Listeners wanting solid-state resolution with natural, tube-like musicality
- Owners of demanding speakers needing efficient, high-power amplification
Who should skip it
- Budget-conscious buyers looking for entry-level or mid-range amplification
- Users with modest source components or mismatched system cabling
- Owners preferring long-term serviceability and independent repair options
Performance breakdown
Power Delivery
Effortlessly commands even the most demanding speaker loads with massive current.
Sonic Transparency
GaNTube technology delivers an incredibly clean and lifelike musical presentation.
Efficiency
Class D architecture ensures high output with minimal thermal waste.
Build Aesthetic
Striking industrial design makes a bold statement in any listening room.
Signal Integrity
Ultra-low distortion levels preserve the nuance of every recorded note.
Operational Simplicity
Manual operation lacks modern conveniences like remote control or standby triggers.
Key Specs
Maximum Output Power (4Ω)
400W
Peak Output Current Capability
50A
THD+N (10W/1KHz)
<0.0075%
Efficiency
≥ 94%
PWM Frequency
800kHz
Dynamic Range
120dB
Dimensions
279x279x127mm (11"x11"x5")
Weight
10kg (22lbs)
Features
- Revolutionary GaNTube™ technology
- Exceptional 50A peak output current
- High-fidelity audio reproduction
- Efficient Class D amplification
- Low noise and high signal integrity
- Avant-garde industrial design
- Remote on/off operation
- Premium WBT speaker binding posts
What customers say
The AGD Gran Vivace Monoblock Amplifier earns high praise as a reference component, primarily for its exceptional sound quality. Reviewers consistently note its revolutionary Gallium Nitride technology blends the best traits of tube warmth with solid state control. Users celebrate its extraordinary transparency, speed, and dynamic range, revealing micro-details without fatigue. The soundstage offers holographic depth and precise imaging against an exceptionally quiet background. While the premium price is a factor, the consensus is that this amplifier delivers unparalleled sonic excellence and a unique aesthetic, positioning it as a pinnacle of modern audio design for dedicated audiophiles.
Know before you buy
GaNTube™ technology integrates Gallium Nitride MOSFETs directly into a vacuum tube structure. This hybrid approach combines the high efficiency and speed of Class D amplification with the harmonic richness and warmth typically associated with tube amplifiers.
Yes. With a 50A peak output current and 400W of power into 4Ω, this amplifier is designed to handle demanding, low-impedance speakers with ease, ensuring tight control and dynamic authority even in large listening rooms.
The Gran Vivace features a user-selectable input voltage ranging from 110V to 240V. This makes it versatile for use in different regions without needing external power conversion.
Unlike traditional vacuum tubes that degrade over time, the GaNTube™ technology is designed for longevity and reliability. You do not need to worry about frequent tube replacements or bias adjustments.
Yes, the Gran Vivace is equipped with both XLR and RCA input connectors, allowing for seamless integration with a wide variety of preamplifiers and audio systems.
No, the Gran Vivace is a monoblock design and is not bridgeable. However, its 400W output is substantial enough to drive the vast majority of high-end loudspeakers effectively on its own.
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$18999