Reference Pure Class A Dual-Mono Power Amplifier | Trimira Audio
The Gryphon Antileon Revelation Stereo represents the fifth generation of Gryphon's renowned Antileon amplifier platform, combining pure Class A operation with a true dual-mono architecture and substantial current capability.
Engineered in Denmark, the Antileon Revelation Stereo is designed around zero global negative feedback, independent power supplies, a large parallel output stage, and selectable Class A bias modes.
With specified continuous output of 160 W per channel into 8 Ω, 320 W into 4 Ω, and 620 W into 2 Ω, the amplifier is designed to maintain authority as loudspeaker impedance falls.
At Trimira Audio, we recommend the Antileon Revelation Stereo for demanding reference systems where high-current amplification, Class A operation, and sophisticated dual-mono construction are priorities.
Key Features & Audio Engineering Highlights
Pure Class A & Zero Global Negative Feedback
The Antileon Revelation operates in continuous Class A and uses zero global negative feedback.
This architecture is designed to avoid conventional crossover distortion while maintaining a direct signal path with wide bandwidth and precise transient behaviour.
True Dual-Mono Power Architecture
Although housed in a single chassis, the amplifier uses two independent mono amplifier sections.
Each channel has its own 1,500 VA custom toroidal transformer, with two AC power inlets providing dedicated power connections for the independent amplifier sections.
This architecture is designed to maximise channel separation and minimise interaction between the left and right channels.
40 High-Current Bipolar Output Transistors
The Antileon Revelation employs 40 high-current Toshiba bipolar output transistors across the stereo amplifier.
The output stage is supported by a substantial 670,000 µF total power-supply reservoir, divided as 335,000 µF per channel.
This combination provides substantial energy storage and current capability for demanding loudspeaker loads.
Selectable Class A Bias & Green Bias
The amplifier provides selectable Low, Medium, and High Class A bias modes.
Gryphon's Green Bias control can also be linked to a compatible Gryphon preamplifier, allowing the operating bias to respond to system volume requirements.
This provides a means of balancing Class A operating range with heat generation and power consumption.
Upgraded Signal Circuitry
The Antileon Revelation incorporates a redesigned high-current BJT input buffer, double-sided copper circuit boards, and silver internal wiring.
These elements form part of Gryphon's approach to maintaining a low-noise, high-current signal path.
Soft-Start & Protection
A controlled soft-start sequence manages the amplifier's substantial power requirements when switched on.
Microprocessor-based protection monitors operating conditions including:
- Thermal status
- DC offset
- Abnormal operating conditions
The protection system is designed to protect the amplifier and connected loudspeakers without compromising the primary signal path.
Product Specifications
| Specification |
Technical Detail |
| Amplifier Design |
Pure Class A True Dual-Mono Stereo Power Amplifier |
| Global Negative Feedback |
0 dB |
| Rated Output Power |
2 × 160 W @ 8 Ω / 2 × 320 W @ 4 Ω / 2 × 620 W @ 2 Ω |
| Output Device Count |
40 High-Current Toshiba Bipolar Output Transistors |
| Power Supply Capacity |
2 × 335,000 µF / 670,000 µF Total |
| Power Transformers |
2 × 1,500 VA Custom-Wound Toroidal Transformers |
| Frequency Bandwidth (-3 dB) |
0.3 Hz–350 kHz |
| Gain |
+31.0 dB |
| Input Impedance |
20 kΩ Balanced |
| Output Impedance |
0.04 Ω |
| Signal Input |
Neutrik XLR Balanced Inputs |
| Loudspeaker Terminals |
Custom Gryphon Gold-Plated Heavy-Duty Binding Posts |
| AC Power Inlets |
2 × Dedicated AC Inputs |
| Maximum Power Consumption |
2500 W |
| Idle Consumption, High Bias |
500 W |
| Standby Consumption |
<0.5 W |
| Dimensions (W × H × D) |
570 × 260 × 600 mm |
| Net Weight |
90.0 kg |
High-Current Loudspeaker Matching
The Antileon Revelation's power output increases substantially as impedance falls:
- 160 W @ 8 Ω
- 320 W @ 4 Ω
- 620 W @ 2 Ω
This makes it particularly appropriate for loudspeakers with demanding impedance characteristics.
For reference systems, amplifier matching should consider the loudspeaker's:
- Sensitivity
- Minimum impedance
- Phase angle
- Desired listening level
- Room size
- Low-frequency requirements
Trimira Audio can assist with selecting suitable loudspeaker and preamplifier combinations.
Class A Installation & Thermal Management
Pure Class A operation generates considerable heat, particularly at the higher bias settings.
The 90 kg chassis also requires a substantial, stable equipment platform.
Brisbane HiFi can advise on:
- Equipment-rack capacity
- Ventilation
- Amplifier spacing
- Dedicated AC power
- Dual power-circuit requirements
- Green Bias configuration
- Loudspeaker matching
Why Choose Trimira Audio for Your Gryphon Reference System?
Trimira Audio Reference Showroom
Audition the Gryphon Antileon Revelation Stereo with appropriate high-end preamplification and reference loudspeakers in the Trimira Audio listening environment.
Mains & System Installation Advice
Our specialists can assist with the practical requirements of this substantial Class A amplifier, including power, ventilation, support, and system integration.
Australian Support
Trimira Audio provides specialist support for high-end Danish audio systems throughout Queensland and Australia, including local warranty assistance and carefully managed freight.
What's Included in the Box?
- 1 × Gryphon Antileon Revelation Stereo Class A Power Amplifier
- 2 × Heavy-Duty AC Power Cords
- 1 × Green Bias Control Link Cable
- Decoupling Spikes & Coasters
- User Manual
- Official Gryphon Audio Documentation
The Gryphon Antileon Revelation Stereo combines pure Class A operation, zero global negative feedback, true dual-mono construction, dual 1,500 VA transformers, 670,000 µF of total reservoir capacity, and 40 high-current bipolar output devices into a substantial 90 kg reference power amplifier.
