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I n t r o d u c t i o n
General features
Each of the G Series power amplifiers is based on modules that feature a symmetrical design with fully electronically-balanced inputs. Both balanced and unbalanced inputs are provided, but in fact the unbalanced inputs are converted to balanced before they enter the amplifier itself, using Meridian’s proprietary ‘superbal’ technology.
The discrete active input components are thermally and electrically matched in pairs, and the amplifiers feature active bias control throughout, with thermal sensing that carefully manages the temperature and current flow at different volume levels.
Fully DC-coupled, the signal path contains no unnecessary capacitors, while those in the power supplies are audiophile grade components.
The amplifiers are of a unique low-feedback design for minimum transient and intermodulation distortion, offering superb clarity and transparency right across the audible range, with an output impedance that is close to zero and suitable for virtually any high- quality third-party passive loudspeaker system.
Special attention has been paid to ensure that the amplifiers can deliver the power that’s required at any given moment. Massive twin low-noise torroidal power transformers provide power to a generous five selected pairs of output devices per channel (four on the G56), carefully temperature-controlled for optimum operating characteristics and efficiency, and with thermal protection for
reliability. The result is a clear, open sound with detail as well as punch where it’s required.
Trigger and other control signals are optically isolated from the amplifier itself. When in standby mode, a standing voltage is maintained on the power rails and supply components. As a result, you only have to wait for a short time after switching on for optimum performance to be achieved.
Two sets of outputs are provided per channel for bi-wiring, etc, on sturdy binding posts colour-coded for easy reference and capable of handling large-diameter high-quality loudspeaker cables. The output terminals are connected to the amplifiers by Van Den Hul silver-strand cable to avoid signal losses.
The amplifiers include electronic protection, reset by power-cycling, with full DC and thermal protection.
A front-panel indicator shows when the amplifier is in standby. When the unit is activated, an LED illuminates for each channel. In the event of thermal overload the main indicator goes red and the channel lights go out, showing that the unit is off-line. A push button on the front panel can be used to take the unit in and out of standby, while flexible 5-30V trigger capability allows amplifier power to be controlled remotely along with the rest of a system.
