Dual-mono power amplifier
The circuital topology of the power amp consists of three stages with double symetrical differential pair cascode-loaded with 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 REV2.0 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 REV2.0.
The new Donizetti CENTO REV2.0 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 REV2.0 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.
4,5 x 17,5 x 15,7 "
Power Amp Gain
Line input impedance
Balanced Input Impedance
> 30 KOhm
Frequency response (Nota2)
> 100 KHz
Noise Level (Nota5)
Output power (Nota4)
100W / 8Ohm p.c.
190W / 4Ohm p.c.
Balanced/Unbalanced + Trigger IN
Nota 1 - Height x Width x Depth (H x W x D)
Nota 2 - Attenuation 0dB, -3dB Band
Nota 3 - Attenuation: 0dB A weighted reffered to 8 Ohm load nominal power
Nota 4 - 1KHz input signal, two piloted channels
Nota 5 - Band limits 0Hz-40KHz
Nota 6 - Band limits 0Hz-22KHz
Nota 7 - Maximum rms voltage output value
Nota 8 - Attenuation 0dB, -3dB band, 1Vrms output
Nota 9 - Attenuation: 0dB A weighted reffered to 200W
Nota 10 - Band limits 0Hz-48KHz
Nota 11 - Full power Bandwidth limited
Nota 12 - Joined in AC for each phase to the common
Nota 13 - For 200W @ 8Ohm
Nota 14 - Attenuation: 0dB A weighted reffered to 50W