MOSFET Stereo power Amplifier
Don’t let its compact size foul you, similar in size to the Compact Range of CDs, VPS, JAZZ and MELODY, the MSA is a powerful yet elegant powerful amplifier.
The MSA has been designed to be extremely transparent and faithful to the music you want to listen to.
The electronic design was inspired by the popular PMA / PSA amplifiers. The output uses a simple pair of MOSFET transistors, a solution that allows the purest and most transparent signals. The MSA is completely symmetrical from input to output.
To make the most of the limited surface area, the heat sink covers the entire top of the amplifier. It is machined from a solid 10 kg block of aluminum, and after machining is completed, its weight reduced to 3.5 kg! This elegant and unique solution allows the amplifier to keep a reasonable temperature even working at full power for a long time.
The front panel is quite simple with just the power ON selector and the world famous Nagra modulometer style power meter. An AUTO start / shutdown function is provided that will turn ON and OFF the amplifier in the presence or absence of input signal.
The MSA is also designed to work as a monoblock. A bridge selector switch on the rear panel allows parallel bridging, and the MSA will then double the current at the output as well as the power. This allows better driving of difficult loads or simply increasing the power if this is needed, for a less sensitive speaker for instance.
The input sensitivity is selectable to 1 or 2V, by the means of switches located on the rear of the amplifier, to offer the best match with the preamplifier.