Donizetti Cento establishes a new reference in the category of high-quality and high-versatility stereophonic products. Donizetti Cento provides circuital solutions with no compromises and features capable to satisfy advanced users’ demands. Donizetti Cento is a 100 Watt per channel amplifier with single-ended and balanced inputs, trigger input and output, high-performance circuits and separated circuit sections for each channel. Donizetti Cento solutions make the unit a valuable and durable investment.

Features
Analog power supply with a separated toroidal transformer and line for each channel, separated power supply for the trigger out. Large bandwidth and low feedback circuitry. High-quality unbalancer for the best connection to preamplifiers with balanced output. Low IMD, high slew rate power section. Calibrated and integrated electronic protections for electric overloads prevention to minimize sound distortion. Single-ended/balanced input selector located on the rear panel next to the input connectors.High-quality passive components

Dual-mono power amplifier
The new Donizetti CENTO dual-mono power amplifier preamplifier represents a quantum leap for Audio Analogue’s composers line, in sound quality, manufacturing and assembly perfection, look & style and performances, yet retaining the famous family look and ease of use. The elegant yet sober appearance of the Donizetti CENTO will allow for a discrete placement in every domestic environment, with both classic style or modern furniture. The amplifier is based upon high performance discrete components circuits, with separate circuits for each task on each channel. The Dual-mono power amplifier is provided with selectable balanced and single-ended inputs. Two switch on the rear panel allow for switching between balanced and single-ended for each channel. The balanced input has a fine circuit which provides for universal interfacing. The circuital topology of the power amp consists of three stages with double symetrical differential pair cascode-loadedwith local feedback, cascode gain stage with local feedback and Vbe multiplier, output darlington with two pairs of output transistor per channel. It also has a global feedback loop and a overload protection circuit, which senses current and voltage as well, with dynamic response to transients. Even the start-up delay circuit is made with discrete components. The trigger input on the rear panel allows for the unit’s operation and switch-off using the connected preamplifier, as an altenative to the usual mains switch on the front panel. This feature makes the Donizetti CENTO a very flexible and easy-to- use equipment. The trigger output, also on the rear panel, allows to operate every other equipment provided with a trigger input via the Donizetti CENTO.

Technical Brief   Output power 100W p.c. su 8Ohm, 1kHz, entrambi i canali pilotati 165W p.c. su 4Ohm, 1kHz, entrambi i canali pilotati Frequency response <10Hz - 200kHz +0/-1dB, 1Vrms in uscita <10Hz – 85kHz +0/-1dB, 8Vrms in uscita Noise level -120dBV, da 20Hz a 50kHz Signal/noise ratio 90dB con 20V out Power amp gain 26 dB Line input impedence  22KOhm Balanced input impedence 30KOhm Size W. 445mm; D. 100mm; H. 370mm Weight 16,5 Kg Power consumption 500VA