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The Gryphon Antileon EVO is a no-compromise pure Class A stereo power amplifier with true dual-mono construction and an over-engineered power supply, delivering 150 watts per channel into 8 ohms with massive current reserves for difficult speaker loads. It uses 40 high-current bipolar output transistors, a fully balanced input and voltage amplifier stage, and a newly developed ultrafast J-FET input stage, fed from a custom ultra-low-noise regulated supply. The output stage is supported by a 670,000 µF power capacitor bank and twin custom-designed 1500 W toroidal transformers in shielded, epoxy-damped casings that are mechanically isolated from the chassis for vibration control. Internal wiring is minimized to a single short run of Gryphon Guideline Reference gold-embedded silver wire, with Mundorf RXF polypropylene capacitors used for power-supply decoupling and Takman REY precision resistors in critical locations. The Antileon EVO offers switchable Class A bias from the front panel and supports Automatic Green Bias when linked to a compatible Gryphon preamplifier, dynamically adjusting Class A bias with volume to reduce heat and power consumption without sacrificing instantaneous current capability. It features a flat frequency response extending beyond 350 kHz, no output relays, frequency-independent damping factor, a microprocessor-controlled non-invasive smart protection system with onboard diagnostic firmware, and proprietary dual binding posts. The heavily braced chassis with massive heatsinks weighs approximately 84-90 kg with dimensions of approximately 570 x 260 x 600 mm.
Amplification power output and characteristics
Analog signal output specifications
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Mephisto's power @ 8ω is 175W against the Antileon EVO's 150W, its signal-to-noise 111 dB against 81 dB, and its output impedance 0.025Ω against 0.04Ω. Both share thd (1.000%).
The Aelius II's power @ 8ω is 200W against the Antileon EVO's 150W, its output impedance 0.25Ω against 0.04Ω, and its input impedance 47Ω against 20Ω. Both share input sensitivity (1.0V RMS).
The SET 100 Ultimate's power @ 8ω is 120W against the Antileon EVO's 150W, its output impedance 0.22Ω against 0.04Ω, and its input impedance 47Ω against 20Ω. Both share class (A).
The Mephisto Solo's power @ 8ω is 200W against the Antileon EVO's 150W, its signal-to-noise 111 dB against 81 dB, and its output impedance 0.013Ω against 0.04Ω. Both share thd (1.000%).
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