A Four I200
Absolute Integrated Amplifier
Our high-end Integrated Amplifier is the
ultimate bridge between accessibility, practicality and uncompromising sonic excellence.
Designed for those who demand the best, it brings together the ease of use with the artistry of sound, transforming your listening experience into something truly extraordinary. Every detail is carefully crafted to deliver a dynamic and immersive soundscape, while maintaining a compact design that fits effortlessly into any environment.
With power and precision, it elevates every note, every chord, making each moment of music feel vivid, alive, and deeply personal. This is where sophistication meets simplicity, redefining what it means to truly hear.
A Four I200
Absolute Integrated Amplifier
The A Four I200 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 Four I200 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.
The integrated preamplifier of the A Four I200 is equipped with six analog inputs, each featuring an input level selection stage (High, Med, or Low). This flexibility ensures optimal adaptation to the wide variety of sources available on the market. Volume control is entrusted to the renowned PGA2320 integrated circuit, whose implementation has been meticulously optimized to fully unleash the musical expression. Every nuance, every detail, unfolds with grace and power, revealing the soul of the music in its most vivid depth, offering discerning listeners a sound experience of rare intensity.
Our high-end Integrated Amplifier is the ultimate bridge between accessibility, practicality and uncompromising sonic excellence.
Designed for those who demand the best, it brings together the ease of use with the artistry of sound, transforming your listening experience into something truly extraordinary. Every detail is carefully crafted to deliver a dynamic and immersive soundscape, while maintaining a compact design that fits effortlessly into any environment.
With power and precision, it elevates every note, every chord, making each moment of music feel vivid, alive, and deeply personal. This is where sophistication meets simplicity, redefining what it means to truly hear.
A Four I200
Absolute Integrated Amplifier
The A Four I200 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 Four I200 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.
The integrated preamplifier of the A Four I200 is equipped with six analog inputs, each featuring an input level selection stage (High, Med, or Low). This flexibility ensures optimal adaptation to the wide variety of sources available on the market. Volume control is entrusted to the renowned PGA2320 integrated circuit, whose implementation has been meticulously optimized to fully unleash the musical expression. Every nuance, every detail, unfolds with grace and power, revealing the soul of the music in its most vivid depth, offering discerning listeners a sound experience of rare intensity.
TECHNICAL SPECIFICATIONS
| INPUT | |
|---|---|
| Connections | XLR or RCA |
| Balanced input Impedance | 94 kΩ |
| Unbalanced input Impedance | 94 kΩ |
| Maximum Input Level (input Bal) | 4.8 Vrms |
| Maximum Input Level (input Unbal) | 2.4 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 (-3 dB) | 0.7 Hz to 85 kHz |
| Frequency range (+0 dB, -0.1 dB) | 5 Hz to 24 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) | -113 dB |
| Gain unbalanced | 18.5 dB |
| Gain Balanced | 24.5 dB |
| Output impedance | 0.0 Ohm |
| Damping Factor | > 3000 |
| HEADPHONE | |
|---|---|
| Headphone impedance range | 32 Ω to 600 Ω |
| Noise Level | -96.2 dBu (12 uVrms) |
| THD+N @ 32 Ω | < 0.0009 % (-101 dB) @ 1 kHz |
| THD+N @ 600 Ω | < 0.0009 % (-101 dB) @ 1 kHz |
| TECHNOLOGY 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 | 100, 115 or 230 Vac |
| Input voltage range | -15%, +10 % |
| Maximum power consumption | 950 W |
| SIZE & WEIGHT | |
|---|---|
| Height | 179 mm |
| Depth | 420 mm |
| Width | 440 mm |
| Weight | 36 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 | |
