![]() ![]() Available in several configurations, mine contains the “premium” upgrade with a single input and pre-amp output.Īlternatively, you can choose two inputs with a switch located on the rear of the unit. The Model A is (at the time of this writing) the only amplifier produced. This is a one-man shop out of Serbia – owned and operated by Pedja Rogic. This allows the amp to be driven without any concern to accidentally altering the frequency response. By constrast, the output impedance of the source is usually ten times lower. As long as I can remember (and find), the vast majority of amplifiers (integrated or not) follow the same formula of having a high input impedance – usually in the range of 40-55k Ohms. While the operating paramenters of solid state amplifiers has evolved over the years, there is one thing that hasn’t really changed – the input impedance.
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