Gryphon Antileon EVO Stereo Class A power amplifier

THE GRYPHON

ANTILEON EVO STEREO CLASS A POWER AMPLIFIER

The Antileon Signature was born a classic like its predecessor, the original Antileon, and immediately established itself in high-end circles as one of the most lauded amplifiers of all time. Loyal followers around the world praise its unique ability to firmly grip even the most demanding speakers and reveal the inner workings of every musical performance.

Timeless and evolutionary

The high quality of workmanship and the elegant, organic shape are of timeless beauty and correspond to the exquisite musical enjoyment that the Gryphon Antileon EVO power amplifier offers.

With the Antileon EVO, available in stereo and single-channel configurations, Gryphon takes the next evolutionary step. The extreme high-current capability of the Gryphon Antileon EVO must be experienced live! The Gryphon Antileon EVO, like all Gryphon amplifiers before it, is a true high-current design. With its exceptional peak-to-peak current capacity, the Gryphon Antileon EVO ensures compatibility with even the most reactive loudspeakers, allowing your speaker of choice to deliver its full performance.

Massive power reserves

Gryphon Antileon EVO uses true Class A biasing so that full power is available at all times. In situations where the full power of the Antileon EVO is not needed (e.g. a small room, music only for background listening, etc.), the owner has the option of selecting full or reduced Class A biasing using the front panel controls.

For added flexibility, when used with a Gryphon preamplifier, Gryphon's proprietary Green Bias Link allows you to automatically adjust the power amp bias depending on the position of the preamplifier's volume control. This means you always have Class A power available when you need it, and massive power reserves to fall back on.

Unique interior

Discreet from the outside, there is a lot going on inside the fully symmetrical Class A power amplifier with double-decker electrolytic capacitor banks connected to the mains via two power switches and two detachable power cables. The two specially developed 1500 W toroidal transformers are mechanically isolated from the housing. A special epoxy resin is used to optimize the vibration damping of the transformer. For additional insulation, the shielded, epoxy-damped housing is mounted in a suspension system for effective vibration damping. Apart from the shielded transformer housing, only non-magnetic materials are used throughout the Gryphon Antileon EVO.

The separate driver section features its own generous, independently regulated bank of Gryphon capacitors fed from separate windings of the transformers. A unique mechanical design ensures optimal thermal tracking between drivers and output devices.

The bypass capacitors are located close to the output transistors and not, as is usually the case, directly on the power capacitors. This contributes to significantly improved high frequency performance.

The internal wiring has been reduced to an absolute minimum and consists of just a single short piece of Gryphon Guideline Reference silver wire with gold inlay.

Two sets of robust, gold-plated binding posts of Gryphon's own design are provided for bi-wiring. The proprietary multi-way terminals can be connected to bare wire, spades, banana plugs, or any combination thereof.

Extreme precision

Each chassis component is fitted into the next with extreme precision for a resonance-free structure, while each part is machined to tight tolerances. The perforated top plate provides additional ventilation and heat dissipation. The front panel is milled from a solid 40mm black acrylic block, which houses the LED display and easily accessible front panel controls.

With the exception of the front panel, the exterior of the Antileon EVO is made entirely of brushed black anodized aluminum with countersunk Allen screws for a seamless appearance.

Technical Details

- 2 x 175 Watt Pure Class A
- Fully symmetrical input and voltage amplifier stage
- 40 high-current bipolar output transistors
- Power supply capacitors with a total of 670,000 uF
- Newly developed, ultra-fast J-FET input stage
- Regulated power supply for the voltage amplifier stage (VAS)
- DC servo circuit with Mundorf RXF polypropylene capacitors for power supply decoupling
- Takman REY precision resistors
- Bandwidth up to over 350 kHz
- Internal wiring with Gryphon Guideline Reference Gold-Silver cable
- Custom-made separate toroidal transformers
- Shielded, epoxy-damped transformer housings for effective vibration isolation
- Separate power supply for the display and control circuits
- No output relays
- Frequency-independent damping factor
- Gryphon's own connection double terminals
- Automatic bias adjustment or manual low/high bias selection
- Network status and polarity display
- Rigid mechanical structure
- Microprocessor-controlled, non-invasive 'smart' protection system
- Upgradeable microprocessor software
- Developed and manufactured in Denmark

Dimensions:
2 x H 26.0 cm, W 57.0 cm, d 60.0 cm
Weight: 2 x 84 kg
Color: black