Orpheus Lab A Three S200 The A Three S200 stereo amplifier from the Absolute line inherits the technology developed by Orpheus Lab for the Opus II of the prestigious Heritage line. It features a current amplification stage driven by six high-power MOSFETs, meticulously hand-matched for each channel, capable of reaching instantaneous current peaks of up to fifteen 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 application of feedback, achieving a perfect balance between musicality and technical performance. As a result, the A Three S200 adapts seamlessly to any type of loudspeaker. The Class AB architecture is brought to life by a carefully calibrated 125 mA bias current, delivering a thermal idle power of 15 WPC and allowing the amplifier, at rest, to stabilize at 15 °C above ambient temperature. To guarantee flawless power delivery, each amplification channel is powered by an oversized toroidal transformer with a capacity of 880 VA. 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. INPUT Connections XLR or RCA Balanced input Impedance 94 kΩ Unbalanced input Impedance 47 kΩ Maximum Input Level (input Bal) 2 Vrms Maximum Input Level (input Unbal) 1 Vrms Grounding option (unbalanced only) Grounded : Signal ground connected to earth Lifted : Separated ground and earth signal OUTPUT Nominal audio power (AB class) 200 W @ 8 Ohm Instantaneous power peak (<200 ms) 850 W (max 56.7 Vpic, 15 Apic) Bias current 125 mA Thermal Idle power 15 WPC Frequency range ( 0 dB, -0.1 dB) 5 Hz to 24 kHz Frequency range (-3 dB) 0.7 Hz to 85 kHz THD N @ 200 W per channel into 8 Ohm 0.004 % (-88 dB) @ 1 kHz, analysis range 20 Hz to 22 kHz THD N unloaded 0.001 % (-100 dB) @ 1 kHz, analysis range 20 Hz to 22 kHz Clip to Noise Ratio (input Bal) -114 dB Clip to Noise Ratio (input Unbal) -112 dB Gain unbalanced 32 dB Gain Balanced 26 dB Output impedance 0.0 Ohm Damping Factor > 3000 TECHNILOGY USED Unique bias circuit guarantees a constant high bias current in all situations Real dual mono topology with 6 High resolution MOSFET per channel Each audio channel is powered by its own 880 VA toroidal transformer and 48 mF of dedicated capacitance, ensuring exceptional POWER Nominal line voltage 115 Vac or 230 Vac Input voltage range -15%, 10 % Maximum power consumption 930 W SIZE & WEIGHT Height 148 mm Depth 420 mm Width 440 mm Weight 30 kg SAFETY FEATURES Non-invasive protection of the audio signal against overload at a current of more than 9 Apic (equivalent to 320 Wpic power at 4 Ohm) Non-invasive protection on the audio signal against DC components on the audio outputs for all frequencies below 5 Hz Automatic switching to MUTING if the AC line drops or is interrupted.
