Sennheiser HDV 820

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“The $2,400 HDV 820 headphone amplifier from the German audio giant Sennheiser features a new onboard digital-to-analog converter that delivers audio with 32-bit resolution and sampling rates as high as 384 kHz. Each compact black unit is equipped with a wealth of inputs and outputs to accommodate various sources and ear speakers, though it is sure to make beautiful music together with Sennheiser’s top-of-the-line HD 800 S headphones.”