The Audia Flight Strumento N°4 mk2 Stereo Power Amplifier achieves unparalleled acoustic fidelity, pushing the boundaries of audio amplification through meticulously designed circuitry. It embodies the principles of high-performance audio, ensuring that every note played is reproduced with astonishing accuracy.
At the core of the Strumento N°4 mk2 lies advanced engineering focused on delivering a pure audio experience. The amplifier utilizes a fully balanced, class A current-feedback design, which minimizes distortion and enhances linearity across its operating range. The power supply setup includes dual super high current supplies per channel, employing ultra-low impedance capacitors and custom toroidal transformers to ensure dynamic response and stability under load. This design eliminates the necessity of fuses in the output stage, instead relying on a microprocessor-controlled current sensor, thus avoiding resistive losses that could color the sound. The chassis is engineered to reduce mechanical vibrations from transformers, creating an isolated audio path that preserves signal integrity. With frequency response extending gracefully from 0.3 Hz to 1 MHz, the amplifier handles a wide range of audio signals, making it adept at driving various speaker configurations with unprecedented control.
Key Features
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Incredible Bandwidth: Greater than 1 MHz, allowing for precise reproduction of high-frequency audio with minimal phase distortion.
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High Output Power: Delivers 250W, 500W, or 900W at 8, 4, or 2 Ohms respectively, providing robust drive capability for a wide selection of speakers.
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Low Noise Gain Stage: Designed for exceptionally low noise performance, the dedicated gain stage uses ultra-fast rectifiers and low impedance capacitors to minimize interference.
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Custom Toroidal Transformers: Employs two 150VA toroidal transformers for audio stages and one 15VA for logic, ensuring stable power supply and dynamic capability.
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Robust Chassis Design: Engineered with a decoupled transformer chassis to minimize frame vibrations impacting audio performance, enhancing clarity and detail.
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Mirrored Polishing and Anodization: Aesthetic yet functional finishes reduce electromagnetic interference and contribute to the overall durability of the amplifier.
Technical Specifications
- Output power per channel: 250W RMS @ 8 Ohm, 500W RMS @ 4 Ohm, 900W RMS @ 2 Ohm
- Gain: 29 dB
- Input sensitivity: 1.41 Volts RMS
- Frequency response (1W RMS -3dB): 0.3 Hz ÷ 1 MHz
- Capacitor bank: 280,000µF on the main power supply
- Power transformer: 3000VA (output stage)
- Active current sensing for output stage protection
- Dual independent power supplies for each channel
