£72,500

Antileon Evo Mono

The Antileon Signature, like its predecessor, the original Antileon, was born a classic, establishing itself immediately in High End circles as one of the most acclaimed amplifiers of all time. Loyal devotees around the world praise its singular ability to maintain a firm grip on even the most demanding loudspeakers and reveal the innermost soul of any musical performance.

CURRENT EVENTS

All amplifiers are not created equal, even if their published specifications might suggest otherwise. The extreme high current capability of the Gryphon Antileon EVO, for instance, is something that must be experienced first-hand, not merely gleaned from a specifications sheet. The wattage (W) that an amplifier is capable of generating is in fact the mathematical product of two factors, Voltage (V) multiplied by Current measured in Amperes (A).

On paper, a low-current, high-voltage amp would appear to produce the same number of Watts as a low-voltage, high current amp, but only if one does not take into account the crucial fact that the ability to generate high instantaneous current is far more critical and relevant to actual audible performance.

For this reason, the Gryphon Antileon EVO, like all Gryphon amplifiers before it, is a true high current design. With exceptional peak-to-peak current capability, the Gryphon Antileon EVO ensures compatibility with even the most viciously reactive loudspeaker loads, permitting the loudspeaker of your choice to perform at its very best.

UNAPOLOGETICALLY UNCOMPROMISING

Recent decades have seen concerted efforts by audio manufacturers to encourage a shift away from high-power Class A amplification in favour of newer, more “efficient” topologies with claims that they can deliver the same level of performance in a lighter, more compact and decorator-friendly form factor.

The truth behind these specious allegations and the true motivation behind the promotion of lightweight amplification are very straightforward. It is an elementary exercise in cost cutting.

INFINITE SEPARATION

While monoblock power amplifiers are by no means rare in the uppermost echelons of High End audio, few – if any – are executed as conscientiously and uncompromisingly as the single-channel Gryphon Antileon EVO Monoblock. More than 90% of all other mono amplifiers have been “designed” easily and speedily, simply by bridging the two channels of an existing stereo model.

Unfortunately, while bridging increases nominal output power, other critical parameters take a major hit.
Because the Gryphon EVO monoblock employs parallel-coupling instead of series coupling (bridging), distortion is cut in half, damping factor is doubled and output impedance is cut in half, doubling current capability for absolute control of loudspeaker loads as low as 1 Ohm.

Specifications

175 Watts Pure Class A mono
Parallel coupling (not bridging/series coupling) reduces distortion and output impedance by 50%, doubles damping factor and current capability
Fully balanced input and Voltage Amplifier Stage (VAS)
40 High current bipolar output transistors
670,000 µF power capacitor bank
Newly developed ultrafast J-FET input stage
Custom-developed ultra-low noise regulated power supply for voltage amplifier stage (VAS).
DC servo circuitry with Mundorf RXF Polypropylene capacitors for power supply decoupling
Takman REY precision resistors
Flat frequency response to beyond 350 kHz
Gryphon Guideline Reference gold-embedded silver internal wiring
Custom-built dual toroidal transformers
Shielded, epoxy-damped transformer casings suspended for effective vibration isolation
Isolated power supply for display and control circuits
No output relays
Frequency-independent damping factor
Proprietary Gryphon double binding posts
Automatic Green Class A bias setting or manual Low/High bias selection
AC power status and polarity display
Rigid mechanical structure
Microprocessor-controlled non-invasive “smart” protection system
Double sealed, mil spec PCB with 105 µm copper traces
Upgradeable microprocessor software