Dual-mono power amplifier
Technical description
The circuitry 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.
Technical features
- Channels 2
- Colours 2
- Input impedance 22 KOhm
- Balanced Line input impedance > 30 KOhm
- Power on 8Ω load 100W / 8Ohm p.c.
- Power on 4Ω load 190W / 4Ohm p.c.
- Power Amp gain 26 dB
- Frequency Response(Att. 0dB, -3dB band) > 100 KHz
- Input Noise(Band limits 0Hz-80kHz/A-weighted) -100 dBV
- SNR 110 dB
- Dimensions(HxWxD) 115 x 445 x 400 mm
- Weight 16.5 Kg
