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The A32 is a high power fully balanced power amplifier, capable of delivering 250W per channel into an 8 ohm load. Balanced signal transmission means that two signal lines are used, which carry the same signal with opposite phase. Before the output stage the signals are mixed, and since any noise will be present in both lines with identical phase, such distortion products are cancelled out leaving only the pure original signal. Balanced topology therefore keeps the signal as free as possible from interference. The A32 has a dual-mono topology together with a current feedback topology. Excellent 1% MELF resistors from Vishay are used, which in concert with a tight PCB-layout, give the A32 the best possible performance.
The circuit is fully-balanced all the way to the output stage and uses active temperaturecompensated current sources, instead of passive resistors. The A32 uses 16 output devices from Toshiba for each channel to ensure high reliability and performance (high current output). These work in high bias class A/B configuration.