Our MAX mono-blocks represent the state of the art of Audionet’s internationally acclaimed ULA (Ultra-Linear-Amplifier) technology. This highly complex circuit topology, which we originally invented for the purposes of medical engineering, delivers results that nudge the boundaries of what is feasible with current measuring techniques. Even under maximum strain or in some other borderline situation, the incidence of signal impurity remains almost below detectable levels, while the outstanding feedback damping ensures that the loudspeakers crisply perform to the limits of their capacity.

The efficiency and precision of MAX is such that even the sound properties of components and materials are clearly audible. For that reason, every sound-critical point in the MAX is exclusively fitted with the finest components and components obtainable worldwide, in some cases custom-made for Audionet. Equipped with a dielectric made of silk, our High Audiograde electrolytic capacitors come from Japan. Our low-loss capacitors are made of mica, a silicate made for us in India and China.

We deploy selected high-current foil capacitors with a minimal loss angle, deploy high-quality silver-gold alloys for our internal wiring, and use the very best connector systems available from WBT, our neighbors in the nearby city of Essen, Germany. Even MAX’s fuses are made of gold.
During the manufacturing process of every single mono-block, all of the relevant components are again checked, measured and matched in order to guarantee optimum performance.

To guarantee absolute channel separation, the MAX are designed as mono amplifiers. The magnetically and capacitatively optimized assembly of the mono-blocks largely eliminates the incidence of feedback from electrical interference rays as well as of reciprocal influences between the amplification channels during the amplification process. The massive cabinet made from aluminium avoids furthermore any harmful influences via subsonic noise.

In order to optimize the high-frequency attributes and the velocity attained by the MAX, miniaturization techniques were consistently deployed. The signal paths have been kept to a minimum, and contain no sound-impairing components such as coils, chokes or power relays.

The MAX are equipped with Cinch and XLR inputs, which are electronically switched over gold-plated precision relays. The input stage is configured as a cascaded and bootstrapped differential amplifier with a low-noise, monolithic dual FET, thus decoupling the end amplifiers electrically from the input signal and avoiding harmful interaction with source. A special double cascade decouples the source signal from the driving and output stage. The driving stage linearises distortions of the output circuit locally with a unique, cross-linked correction circuit in real time. The input and driving stage are separately powered by an oversized 80 VA toroid-core transformer with separate windings for positive and negative operating voltage.
The output stage is equipped with eight hand selected power MOSFETs with actively controlled bias current amounting to 0.6 A. The supply voltage is stabilized as rapidly as possible by optimized discrete MOSFET regulators. To get an optimum of performance, negative and positive operating voltage are entirely decoupled. Two individual 1000-VA toroid-core transformer feed the positive and the negative half cycle of the mains. Four special, fast, and impulse-resistant high-current capacitors with total filtering capacity amounting to 156,000 uF serve as accumulator.

A microprocessor unit controls all functions and permanently monitors DC, HF, temperature and overload, and disconnects the MAX from the mains supply in the case of faults. A large-size, two-line display indicates fault sources in plain text. Remote activation is possible optically via Audionet-Link as well as signal-dependently in three sensitivity ranges. The control unit is separately supplied by a transformer.

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