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The first question we asked ourselves when we decided to improve the Strumento series was: where can we make changes to a sound that already seemed practically perfect? As with any creation where every parameter is pushed to the limits of its potential, the only area left to work on is the details. Only by refining every single aspect can we achieve truly superior overall performance. We are convinced of it: the new Strumento Signature models are undoubtedly the finest devices Audia has ever produced.
Introducing the Strumento N°4 Signature Stereo Power Amplifier: an extraordinary two-channel powerhouse meticulously designed to deliver unparalleled sonic performance and aesthetic splendor. This state-of-the-art amplifier embodies our relentless pursuit of perfection, boasting lightning-fast response speeds with a bandwidth exceeding 1MHz, up to 1000 Watts of output power, and a remarkable capability to control even the most demanding speakers with effortless precision.
Refinement Rooted in Experience and Artistry
The Strumento N°4 Signature is the product of research and hands-on development, drawing on insights gained from our flagship Strumento N°8 Signature Mono-block Power Amplifier. Each subtle yet essential adjustment has been meticulously calibrated, guided by the keen ears of our expert engineers. This dedication to refinement mirrors the art of a luthier, who, with their expert craftsmanship and acute auditory sense, transforms an instrument into a conduit of emotional resonance and tonal perfection.
Impeccable Design and Construction
A precious golden plaque on the front immediately highlights the exclusive class of this device. The amplifier’s chassis is a masterpiece of precision engineering. Starting with a bespoke aluminum casting of the highest grade, the chassis undergoes precise CNC machining before being polished to a mirror-like sheen by hand. Select critical areas receive additional hand-finishing, shot peening, and anodization, culminating in a breathtaking display of metalwork artistry. Finally, elegant silk-screening adorns the finished product, adding the final touch of sophistication.
Unmatched Craftsmanship and Advanced Components
Inside this stunning exterior lies a world of expertly crafted electronics and superior Italian workmanship. The Strumento N°4 Signature features a fully balanced circuitry and shows an extensive use of high-end components along the signal path that elevates audio information processing to perfection. The capacitors are from the German brand Mundorf, the resistors are Vishay ZFoil and Dale, and all relays are high-frequency Reed relays. Binding posts are from Mundorf brand too. Its massive power supply, equipped with a staggering 280,000µF of ultra-low impedance capacitors, ensures impeccable energy delivery and signal fidelity. Custom-printed boards are enhanced with extra gold surface, all internal parts related to the audio signal, as bars, spacers and so on, are gold-plated to ensure perfect contacts over time.
Revolutionary Power Supply Design
The Strumento N°4 Signature’s power supply architecture sets new benchmarks in audio amplification. Each channel is powered by two super high-current supplies and supported by four independent stabilized stages: two for the input stages and two for the Audia Flight current-feedback stage. This sophisticated setup minimizes noise, while ultra-fast rectifiers and low-impedance capacitors ensure flawless power filtration. Two robust 150VA toroidal transformers handle the main stages, while a 15VA toroidal transformer manages logic control and protection circuits. The absence of traditional fuses in the output stage power supply eliminates resistive sound degradation, replaced instead with advanced microprocessor-monitored current sensors for superior sonic purity.
Exclusive Audia Flight Gain Stage Design
At the core of the Strumento N°4 Signature lies a proprietary Class A current-feedback gain stage, housed within an aluminum enclosure and encapsulated in epoxy resin. This enclosure not only provides thermal stability for discrete components but also shields the circuitry from electromagnetic interference, ensuring optimal performance. The output stage benefits from a custom-built 3000VA transformer, sealed in epoxy resin and dual ferromagnetic shields to deliver immense power and isolation.
Vibration Isolation and Mechanical Innovation
To protect the integrity of the sound, mechanical details have been thoughtfully addressed. The power transformers rest on an independent chassis, physically decoupled from the main audio circuit. This isolation discharges any unwanted vibrations directly to the ground, maintaining pristine sound quality even under high power demands.
A Statement in Sonic and Visual Excellence
The Strumento N°4 Signature Stereo Power Amplifier is a singular marvel in audio engineering, achieving an exquisite balance between technical sophistication and artisanal beauty. Only a pair of the legendary Strumento N°8 Signature Mono-block Power Amplifiers can surpass its brilliance, making the Strumento N°4 Signature the perfect centerpiece for any discerning audiophile's system. Crafted for those who seek nothing less than excellence, the Strumento N°4 Signature promises a listening experience that transcends ordinary audio, inviting you into a realm of musical perfection.
Technical data
Output power per channel Watts RMS @ 8/4/2 Ohm 300/600/1000W
Gain 29 dB
Input sensitivity 1.41 Volts RMS
Frequency response (1W RMS -3dB) 0,3 Hz ÷ 1 MHz
Slew-Rate (@ 8 Ohm) > 200 V/µS
THD < 0,05 %
S/N Ratio110 dB
Input impedance Unbalanced 7,5 kOhm
Balanced 7,5 kOhm
Damping factor (@ 8 Ohm) > 1000
Main voltage AC (50-60Hz) 100, 110-115, 220-230, 240 V
Stand-by Power consumption less than 1W
Nominal Power consumption (no signal) 400W
Power consumption (260W RMS @ 8ohm both channels driven) 1000W
Dimensions and weight 450x280x500mm (W x H x D) - 95kg
Shipping dimensions and weight 580x410x700mm (W x H x D) - 125kg
Audia Flight är ett italienskt företag som är känt för att tillverka högkvalitativa ljudutrustningar, främst förstärkare och CD-spelare. Företaget grundades 1996 och har sitt säte i Civitavecchia, Italien. Audia Flight lägger stor vikt vid att kombinera teknisk precision med en passion för musik och ljudkvalitet. Deras produkter är utformade för att leverera en autentisk ljudupplevelse och de använder avancerad teknik och noggrant utvalda komponenter för att uppnå detta. Audia Flight har fått erkännande internationellt bland audiofiler och musikentusiaster för sina innovativa lösningar och sitt fokus på detaljrik och kraftfull ljudåtergivning.
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