Gryphon Mephisto Mono

Uncompromised Parallel Class A Monoblock Authority | Available at Trimira Audio

The Gryphon Mephisto Solo Mono is a statement-level monoblock power amplifier designed for the most demanding reference two-channel systems.

Rather than simply bridging a conventional stereo amplifier, the Mephisto Solo uses a parallel amplifier architecture, combining two complete amplifier channels within each monoblock chassis. This approach is designed to increase current capability while reducing output impedance and maintaining the control associated with Gryphon's flagship Pure Class A amplification.

Each monoblock operates in Pure Class A with zero global negative feedback, delivering a specified 200 W into 8 Ω, 400 W into 4 Ω, and 1,600 W into 1 Ω.

At Trimira Audio, we recommend the Mephisto Solo Mono pair for uncompromising reference systems requiring exceptional current delivery, extreme low-impedance control, and maximum channel separation.

Key Features & Technological Innovations

Parallel Monoblock Architecture

Each Mephisto Solo contains two complete amplifier channels operating in parallel.

The parallel configuration is designed to increase available current while lowering output impedance, providing greater control over demanding loudspeaker loads.

This differs fundamentally from simply bridging amplifier channels.

Pure Class A Operation

The Mephisto Solo operates in continuous Pure Class A, with the amplifier specified to deliver:

• 200 W @ 8 Ω
• 400 W @ 4 Ω
• 1,600 W @ 1 Ω

The substantial output capability allows the amplifier to maintain authority as loudspeaker impedance falls.

Zero Global Negative Feedback

The Mephisto Solo uses zero global negative feedback.

Combined with its wide 0.3 Hz–400 kHz (-3 dB) frequency response, this architecture is designed to provide a direct, wide-bandwidth signal path with precise transient behaviour.

80 High-Speed Bipolar Output Transistors

Each monoblock incorporates 80 high-current bipolar output transistors.

The large parallel output stage provides the current capacity required for difficult loudspeaker loads and contributes to the specified <0.013 Ω output impedance.

1,000,000 µF Energy Storage

The Mephisto Solo system incorporates an enormous 1,000,000 µF total filtering reservoir per stereo pair.

The energy-storage architecture is designed to provide substantial instantaneous power reserves during demanding musical transients.

Dual Shielded Holmgren Transformers

The power supply incorporates custom-designed Holmgren toroidal transformers with shielding and mechanical isolation intended to reduce unwanted mains interference and transformer vibration.

Green Bias Link System

The Mephisto Solo provides selectable Low, Mid, and High Class A bias settings.

The Green Bias system can also be connected to compatible Gryphon preamplification, allowing operating bias to be managed according to system requirements.

Technical Specifications

Reference Monoblock System Architecture

A matched Mephisto Solo pair provides independent amplification for each loudspeaker:

Preamplifier → Left Mephisto Solo → Left Loudspeaker

Preamplifier → Right Mephisto Solo → Right Loudspeaker

Each monoblock has its own substantial power supply and amplifier chassis, providing maximum physical separation between the left and right channels.

The parallel amplifier architecture within each chassis then provides the additional current capability required for demanding reference loudspeakers.

High-Current Loudspeaker Matching

The Mephisto Solo's specified output rises dramatically as impedance decreases:

This makes the amplifier particularly appropriate for reference loudspeakers with demanding low-impedance characteristics.

System matching should consider the loudspeaker's sensitivity, impedance curve, phase angle, room size, and desired playback level.

Trimira Audio can assist with selecting suitable loudspeakers and preamplification for the Mephisto Solo system.

Installation & Power Requirements

At 108 kg per monoblock, the Mephisto Solo requires substantial equipment support and careful delivery planning.

Pure Class A operation also produces significant heat, making adequate ventilation essential.

The dual C19 power inputs per chassis and substantial power requirements should be incorporated into the system design from the outset.

Trimira Audio can advise on:

• Dedicated high-current mains circuits
• Equipment support
• Amplifier spacing
• Ventilation
• Thermal management
• Green Bias configuration
• Balanced XLR connectivity

Consult with the High-End Audio Specialists at Trimira Audio

The Gryphon Mephisto Solo Mono combines parallel Pure Class A amplification, zero global negative feedback, 80 high-current bipolar output transistors per monoblock, ultra-low output impedance, enormous energy storage, and exceptional 1-ohm load capability.

Trimira Audio can assist with complete Mephisto Solo system design, including loudspeaker matching, dedicated power planning, thermal management, equipment placement, and final system calibration.

Contact the Trimira Audio ultra-high-end specialists in Brisbane to arrange a private audition or discuss a complete Mephisto Solo reference amplification system.