The Gryphon Apex Mono is Gryphon Audio Designs’ flagship pure Class A monoblock power amplifier, engineered without conventional restrictions on size, weight or cost. Designed and manufactured in Denmark, each monoblock combines balanced dual-differential Class A input circuitry, an ultra-fast symmetrical Class A voltage amplification stage and zero global negative feedback to deliver exceptional transparency, dynamic authority and control.
Sixty-four very high-current bipolar output transistors, an enormous 1,040,000µF capacitor bank and two bespoke 2,000VA toroidal transformers in each monoblock provide extraordinary energy reserves. The Apex Mono delivers 225W into 8 ohms, 450W into 4 ohms, 880W into 2 ohms and 1,690W into 1 ohm. Fully regulated low-noise supplies for the voltage amplification stages, extensive constrained-layer chassis damping and Gryphon silver internal wiring complete an uncompromising design capable of controlling the most demanding loudspeakers while preserving exceptional refinement and musical resolution.
Key Features
Flagship pure Class A monoblock power amplifier
Designed and manufactured in Denmark
Zero global negative feedback
64 very high-current bipolar output transistors per monoblock
1,040,000µF capacitor bank per monoblock
2 × bespoke 2,000VA toroidal transformers per monoblock
Extremely low-capacitance Class A J-FET input buffer
Balanced dual-differential Class A input circuitry
Ultra-fast symmetrical Class A voltage amplification stage
Fully regulated low-noise power supply for voltage amplification stages
DC servo coupling
Frequency-independent damping factor
Premium massive zinc-foil capacitors for local power-supply decoupling
Four-layer PCBs with up to 105µm copper
Gryphon silver internal signal and power wiring
Individually decoupled transformer castings
True balanced gold-plated Neutrik XLR input
Gold-plated Neutrik XLR signal pass-through
Gryphon custom gold-plated loudspeaker binding posts
Automatic Gryphon Green Bias control
Manual Low/Mid/High bias settings
Non-intrusive protection system
Firmware upgradeable via USB
225W into 8Ω
450W into 4Ω
880W into 2Ω
1,690W into 1Ω
THD+N: <0.02% at 50W into 8Ω
Output impedance: 0.010Ω
Bandwidth: 0.3Hz–330kHz (-3dB)
Gain: 31dB
Balanced input impedance: 10kΩ
Maximum power consumption: 3,700W per monoblock
High-bias idle consumption: 1,000W per monoblock
Two C19 AC power inlets per monoblock
Dimensions: 593 × 371 × 886mm each
Weight: 202kg each
The Gryphon Apex Mono is Gryphon Audio Designs’ flagship pure Class A monoblock power amplifier, engineered without conventional restrictions on size, weight or cost. Designed and manufactured in Denmark, each monoblock combines balanced dual-differential Class A input circuitry, an ultra-fast symmetrical Class A voltage amplification stage and zero global negative feedback to deliver exceptional transparency, dynamic authority and control.
Sixty-four very high-current bipolar output transistors, an enormous 1,040,000µF capacitor bank and two bespoke 2,000VA toroidal transformers in each monoblock provide extraordinary energy reserves. The Apex Mono delivers 225W into 8 ohms, 450W into 4 ohms, 880W into 2 ohms and 1,690W into 1 ohm. Fully regulated low-noise supplies for the voltage amplification stages, extensive constrained-layer chassis damping and Gryphon silver internal wiring complete an uncompromising design capable of controlling the most demanding loudspeakers while preserving exceptional refinement and musical resolution.
Key Features
Flagship pure Class A monoblock power amplifier
Designed and manufactured in Denmark
Zero global negative feedback
64 very high-current bipolar output transistors per monoblock
1,040,000µF capacitor bank per monoblock
2 × bespoke 2,000VA toroidal transformers per monoblock
Extremely low-capacitance Class A J-FET input buffer
Balanced dual-differential Class A input circuitry
Ultra-fast symmetrical Class A voltage amplification stage
Fully regulated low-noise power supply for voltage amplification stages
DC servo coupling
Frequency-independent damping factor
Premium massive zinc-foil capacitors for local power-supply decoupling
Four-layer PCBs with up to 105µm copper
Gryphon silver internal signal and power wiring
Individually decoupled transformer castings
True balanced gold-plated Neutrik XLR input
Gold-plated Neutrik XLR signal pass-through
Gryphon custom gold-plated loudspeaker binding posts
Automatic Gryphon Green Bias control
Manual Low/Mid/High bias settings
Non-intrusive protection system
Firmware upgradeable via USB
225W into 8Ω
450W into 4Ω
880W into 2Ω
1,690W into 1Ω
THD+N: <0.02% at 50W into 8Ω
Output impedance: 0.010Ω
Bandwidth: 0.3Hz–330kHz (-3dB)
Gain: 31dB
Balanced input impedance: 10kΩ
Maximum power consumption: 3,700W per monoblock
High-bias idle consumption: 1,000W per monoblock
Two C19 AC power inlets per monoblock
Dimensions: 593 × 371 × 886mm each
Weight: 202kg each
