This paper introduces the operating principle of two special digital audio processors, and then describes several circuit designs of high quality digital audio voltage amplifier.

首先介绍了两种专用数字音频处理器的性能特点和原理，然后阐述高品质数字音频电压放大器的几种电路设计方案。

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Purpose: Low voltage output amplifier, audio muting, DC-DC converter.

用途：用于低电压输出放大，音频静音，直流-直流转换。

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Low, medium and high voltage, standard, Use in big screen color-TV, frequency conversion air conditioner audio circuits, ets.

低中高压，焊针式标准品，可用于大萤幕彩电、变频空调、音响等电子线路中。

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In order to fully exploit the sound potential of the HDVD 800 with any audio source, a rotary gain switch at the rear of the unit provides simple adaptation of the amplifier output to the audio input voltage.

ENGADGET: Sennheiser unveils HDVA 600 analog headphone amp, asks for $1,600