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About the D125
The Audio Research D-125 is a high-end hybrid tube/FET stereo power amplifier produced between 1988 and 1991. It features four matched pairs of 6550 tubes in the power stage, delivering 110 watts per channel with a power bandwidth of 10 Hz to 80 kHz (-3 dB points). The amplifier combines tube warmth with FET precision, offering a classic Audio Research sound signature. It is housed in a metal rack-mount chassis measuring 19 x 8.75 x 16.5 inches and weighs approximately 42 kg (92.5 lbs). The unit requires external speakers and operates on AC power (220V). Originally
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