







H Three M800 Opus II
Tax excluded.
*Sold as pair
Step into the realm of sonic mastery. Our new amplifier epitomizes the marriage of power and precision, delivering a symphony of sound for a transcendent immersion. Crafted with passion and dedication to perfection, this amplifier embodies the perfect balance between raw strength and delicate control. From the thunderous lows to the crystalline highs, prepare to embark on a journey of audio enlightenment, where every note resonates with the purity of true craftsmanship, revealing the texture of the sound waves and unveiling layers of detail previously unheard. Create your sound sanctuary, where is the living body of music is materialised.
The Mono-bloc H Three M800 amplifier from the Heritage Line is part of a new opus that redefines what Orpheus has previously achieved. Featuring a current amplification stage driven by twenty-four manually matched power MOSFETs, it can reach instantaneous current peaks of up to forty-five amperes. To ensure optimal control throughout the amplification chain, each MOSFET is governed by a bipolar technology control stage. This approach, combined with a multi-point feedback topology, allows for the precise amount of feedback required to blend musicality with technical performance seamlessly. Consequently, the H Three M800 can adapt optimally to any type of loudspeaker.
The Class AB architecture is brought to life by a carefully calibrated 480 mA bias current, delivering a thermal idle power of 96 WPC and allowing the amplifier, at rest, to stabilize at 15 °C above ambient temperature. The polarization circuit ensures optimal biasing regardless of the operating temperature. Furthermore, its low impedance BJT component architecture maintains constant biasing irrespective of the load type, even at the highest current peaks.
Because musicality comes first and no measuring instrument can rival the human ear in this matter, these technological combinations have been meticulously refined through numerous iterations between laboratory measurements and listening sessions. The result is a purely musical experience, with breathtaking dynamic capability, extremely sharp note attacks, and exceptional openness.
Specs |
|
| Input Connections | XLR (Balanced) and RCA (Unbalanced) |
| Input Impedance | Balanced: 94 kΩ / Unbalanced: 47 kΩ |
| Input Sensitivity | 2.525 Vrms (Balanced) / 1.162 Vrms (Unbalanced) |
| Grounding Modes | Rear Switch: Grounded or Lifted |
| Nominal Power (Class AB) | 800 Wrms @ 4 Ohm / 400 Wrms @ 8 Ohm |
| Continuous Peak Power | 2200 Wpic (80.8 Vpic / 28 Apic) |
| Instantaneous Peak Power | 3600 Wpic (<200 ms; 45 Apic) |
| Bias Current / Idle Power | 480 mA / 96 WPC Thermal Idle |
| Frequency Response | 5 Hz – 90 kHz (+0/-0.1 dB); 0.7 Hz – 165 kHz (-3 dB) |
| THD+N (Full Load / 4 Ohm) | 0.0018 % (-95 dB) @ 1 kHz |
| THD+N (Unloaded) | 0.0007 % (-103 dB) @ 1 kHz |
| Clip to Noise Ratio | -123 dB (Balanced and Unbalanced) |
| Gain | 27.1 dB (Balanced) / 33.1 dB (Unbalanced) |
| Output Impedance | 0.0072 Ohm |
| Damping Factor (@ 8 Ohm) | 1100 |
| Amplifier Topology | Real dual mono with 24 High-res MOSFETs |
| Power Supply Architecture | 2400 VA Toroidal / 350 mF Capacitance |
| Nominal Line Voltage | 115 Vac or 230 Vac |
| Power Consumption | 1200 W (Nominal) / < 1 W (Standby) |
| Dimensions (H x W x D) | 271 mm x 440 mm x 440 mm |
| Weight | 56 kg |
| Overcurrent Protection | Cuts power if > 28 Apic remains for > 200 ms |
| Output Monitoring | Speaker protection against low-frequency/DC components |
| Safety Features | Current limited to ±45 A peak; Auto-mute on AC drop |
