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The Gryphon Mephisto Solo

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Mephisto is built to meet the challenge of the most advanced contemporary loudspeakers which typically present vicious reactive loads while drawing huge amounts of current. The dual mono Mephisto is capable of massive peak current swings and, equally vital, can do so into very low impedances without losing its cool.

Se yderligere information på
www.gryphon-audio.dk


Specifikationer
Pure Class A 200 Watts (8 Ohm), 400 W (4 Ohm), 800 W (2 Ohm), continuous RMS
Zero global negative feedback
1,000,000 microFarad capacitor bank
Two separate Holmgren toroidal transformers with internal magnetic shielding
Monoblock configuration
Separate power supplies for amp and digital circuits
Gold-plated Swiss Neutric XLR input sockets
Gold-plated custom-built Gryphon binding posts
Non-invasive protection system
Designed and built in Denmark

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Lagerstatus: Bestillingsvare

Detaljer

They said it couldn’t be done. Or maybe they just meant that it shouldn’t be done in a prevailing climate of global financial meltdown. In either case, anyone even remotely familiar with the workings of the mind of Gryphon founder and CEO Flemming E. Rasmussen knows that this is exactly the kind of challenge on which he thrives.

While other High End manufacturers are quietly closing up shop or reluctantly downsizing their ambitions in concession to an increasingly gadgetised and commodified audio market, Gryphon Audio Designs boldly and proudly offers the world the most advanced and, yes, most costly amplification components in the brand’s history.

The Pandora preamplifier and Mephisto stereo power amplifier bravely bucked current trends of austerity and restraint, opening up new dimensions in home entertainment for the serious music lover. Designed and built for the select few who can appreciate and afford this level of uncompromising musicality, the Pandora/Mephisto system announced to the world in no uncertain terms that Gryphon continues to stand by the commitment to ultimate fidelity in home audio that is the foundation of the company’s worldwide reputation.

The Gryphon Mephisto

The Next Step?
Of course, being Gryphon aficionados and, therefore, by definition, connoisseurs of the finer things in life, Gryphon owners immediately began speculating about what the next step might be for Rasmussen and his adventurous band of engineers and audiophiles. Nothing exceeds like excess, as an old saying goes.
Now, for the most demanding among the fortunate few who make up the Gryphon audience, for that limited circle able and willing to travel with us all the way on our journey, Gryphon presents the Gryphon Mephisto Solo single-channel power amplifier.

While monoblock construction is not unheard of in the High End, most often manufacturers take the easy way out, by simply creating a bridged version of an existing two-channel product. Bridging couples the stereo channels in series to form a single amplifier with increased voltage and, nominally, more output power. Unfortunately, the inevitable side effects of this approach include doubling distortion, doubling the input impedance (impairing the amplifier’s ability to drive low-impedance loudspeaker loads) and cutting damping factor in half (reducing the amplifier’s control of cone motion at low frequencies).

The Gryphon Mephisto Solo elegantly eliminates these issues by running two stereo channels in parallel (not in series) for unchanged output and voltage, but double the current and half the distortion. As always, extreme high current capability is a fundamental parameter in Gryphon amplifier design. Capable of massive current swings, Gryphon Mephisto Solo maintains the dynamic integrity of the audio signal even under the most extreme reactive loudspeaker load conditions. The extraordinary load tolerance of the Mephisto Solo means that it will bring out the best in any loudspeaker.

Isolating power amplifier channels in completely independent enclosures offers additional crucial advantages. With separate power supplies, rectifiers, regulation, preamp stages and gain stages, there is no interaction whatsoever between channels. What happens in one channel at any given time (for instance, extreme instantaneous dynamic demands) is entirely independent of and therefore unaffected by anything going on in the other channel.

Total physical separation of the channels eliminates any possibility of inter-channel crosstalk, providing infinite stereo separation.

As a result, the Gryphon Mephisto Solo drives loudspeakers with greater ease, control and authority, delivering a more spacious soundstage in all dimensions, rich detail against a silent background and tighter, more extended bass. Less critically, independent mono amplifiers offer increased flexibility of placement in the listening room.

The quality of sound reproduced by Gryphon Mephisto Solo is completely level-independent. It is a huge amplifier capable of delivering its best at any volume setting, from background levels to full throttle.

The Gryphon Mephisto

A Peek beneath the Hood
To generate and control such pure power, Gryphon Mephisto Solo employs custom designed Holmgren transformers with generous filtering capacity for high pulse current. The fully regulated gain stage power supply ensures long-term reliability and safety. The carefully regulated and filtered power supply removes harmful high-frequency noise and voltage spikes without compromising current capacity. The complete removal of mains noise enhances focus, immediacy, transient crispness and soundstage depth.

Gryphon Mephisto Solo is designed with zero global negative feedback in order to meet the dynamic demands of the very best analogue and digital source components. Exceptional bandwidth – beyond 350 MHz - is achieved despite the total elimination of feedback.

Only the finest components are employed throughout for optimal electrical and audio characteristics. The voltage amplification stage incorporates high-speed Zetex surface mount transistors with minimal capacitance and high DC current gain (Hfe) and the output stage employs high-speed Toshiba pre-driver transistors. A fully symmetrical, regulated low noise voltage supply has been used for all voltage amplification sections. For each monoblock, eight 56,000 microFarad capacitors with low ESR (Equivalent Series Resistance) and a total capacity of 448,000 microFarad/100V smoothes the voltage to the output supply.

Static shielding isolates primary and secondary windings in the massive dual Holmgren transformers designed and built especially for the Gryphon Mephisto Solo.
By eliminating output relays, Gryphon Mephisto Solo achieves an extraordinary low output impedance. But most importantly, because output relays that can handle huge constant currents tend to have poor low to moderate signal transfer characteristics, the best relay is quite simply no relay at all.

As always with Gryphon, what is left out is just as critical as what goes in.

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