Introduzione

INTRODUCTION

The amplifier Maestro Monoblock has been perfectly realised in every single detail in order to improve the sound performance.

Many hours spent to design and simulate the new circuit’s configuration, have been followed by a lot of listening tests. The target was to obtain an amplifier with balanced inputs suitable to every kind of speaker maintaining the same refinement of the amplifiers with low output power.

The study of the circuit’s configuration and the design of the mechanical parts have had a parallel development in order to guarantee a perfect cooling even having the heatsinks completely covered by the chassis.

L’amplificatore Maestro Mono è stato curato in ogni suo dettaglio per ottimizzare la riproduzione sonora. Alle lunghe ore passate per progettare e simulare la nuova configurazione circuitale, sono seguite altrettanto approfondite sessioni di ascolto. L’obiettivo è stato quello di ottenere un amplificatore con ingressi bilanciati che possa pilotare qualsiasi tipo di cassa mantenendo la raffinatezza caratteristica degli amplificatori di piccola potenza. Lo studio della configurazione circuitale è andato di pari passo con lo studio delle parti meccaniche per garantire un adeguato smaltimento del calore pur nascondendo alla vista le alette di raffreddamento

CIRCUIT’S CONFIGURATION

The basic structure of the amplifier MAESTRO MONOBLOCK is the same used in the precision balanced amplifier used in the laboratories. It is made of three different amplifiers. The first two must amplify in tension the balanced signal and the third one must supply the necessary current amplification to drive the speakers. This kind of structure has two important benefits: the first one is a disturbs high immunity, while the second one is the possibility to improve each amplification stage. The separation between the gain in tension and of the gain in current permits to realize class A tension amplifiers made with low power components, so to obtain a frequency response up to about 500kHz. Such frequency extension gives the possibility to maintain the phase errors to a very low level. The power section has been designed to obtain a high gain in current and not in tension. Thanks to this solution, it is possible to keep the frequency response at full power around at 200kHz.

Also the bass frequency extension has been realised with care applying an offset recover circuit able to go down to 3Hz. Due to its two stages configuration, the amplifier Maestro Monoblock does not have a global feedback between inputs and outputs

CONFIGURAZIONE CIRCUITALE

La struttura di base dell’amplificatore Maestro Mono rispecchia quella utilizzata negli amplificatori bilanciati di precisione da laboratorio. E’composta da tre amplificatori distinti. I primi due si occupano di amplificare in tensione il segnale bilanciato e l’ultimo di fornire l’amplificazione in corrente necessaria al pilotaggio delle casse. Questo tipo di struttura presenta due vantaggi fondamentali; il primo è una alta immunità ai disturbi ed il secondo è la possibilità di ottimizzare ciascuno stadio di amplificazione. La separazione del guadagno in tensione da quello in corrente ha permesso infatti di realizzare degli amplificatori di tensione in classe A con componenti di piccola potenza, quindi ha permesso di ottenere una risposta in frequenza estesa fino a circa 500kHz. Una simile estensione in frequenza consente di mantenere gli errori di fase ad un livello molto basso. Di contro la sezione di potenza è stata progettata per avere un grosso guadagno in corrente ma non in tensione. Questo ha consentito di mantenere la risposta in frequenza a piena potenza intorno ai 200kHz.

Anche l’estensione a bassa frequenza è stata particolarmente curata con l’applicazione di un circuito di recupero dell’offset che scende fin sotto i 3Hz.

A causa della sua configurazione a due stadi, l’amplificatore Maestro Monoblock non ha una retroazione globale fra gli ingressi e l’uscita.

MONO BLOCK POWER AMPLIFIER specifications

The Audio Analogue SRL Mono Block Power Amplifier stands as a testament to audiophile craftsmanship, encapsulating years of engineering expertise and a steadfast commitment to high-fidelity sound reproduction. This power amplifier is specifically designed for those who seek an unparalleled audio experience, making it an ideal choice for discerning music lovers and professional audio enthusiasts alike.

One of the most noteworthy features of the SRL Mono Block is its robust power output, delivering dynamic and accurate sound that brings studio-quality performance to any listening environment. Each amplifier unit is engineered to provide incredible headroom, ensuring that loud passages are rendered without distortion while maintaining the subtle details in quieter sections. With an output of more than 200 watts per channel, the SRL Mono Block can effortlessly drive a wide variety of speakers, making it incredibly versatile for different setups.

At the heart of the SRL Mono Block's performance lies its use of advanced Class A/B amplification technology. This design combines the efficiency of Class B with the superior sound quality of Class A, resulting in a cleaner, more linear response across the frequency spectrum. The amplifier features a fully discrete output stage, which minimizes distortion and maximizes clarity, offering listeners an immersive audio experience that feels both powerful and nuanced.

Another key characteristic of the SRL Mono Block Power Amplifier is its build quality. The amplifier is housed in a sturdy chassis made from high-grade aluminum, which not only adds to its aesthetic appeal but also enhances its durability and thermal management. The layout is meticulously designed to reduce electromagnetic interference, ensuring that the integrity of the audio signal is maintained from input to output.

Moreover, the SRL Mono Block boasts advanced thermal regulation features, allowing for continuous operation without overheating, even during demanding listening sessions. This engineering excellence ensures long-term reliability, making it a worthy addition to any high-end audio system.

User-friendly connectivity options further enhance the amplifier's appeal. It includes balanced XLR and unbalanced RCA inputs, allowing seamless integration into various audio setups. The amplifier also features a remote trigger output, enabling automatic power-on synchronization with other audio components.

In summary, the Audio Analogue SRL Mono Block Power Amplifier is a remarkable fusion of power, precision, and reliability. With its high output, advanced Class A/B technology, and superior build quality, it caters to the needs of audiophiles who demand nothing less than extraordinary sound. Whether for a dedicated listening room or a professional studio, this amplifier promises to deliver a listening experience that is truly captivating.