本刊1995年第5期介绍的《自制小型音频DAC》以其性能优越、电路简洁而受到国内许多音响生产厂家和爱好者的青睐,有的三家已在此基础上生产出CD机、VCD机摩机用20bit、8倍超取样发烧级D/A板,并取得较好经济效益。然而,该DAC仍有值得改进之处。本文介绍的改进虽然只是增加一只二极管,但 The fifth issue of 1995, “self-made small audio DAC” for its superior performance, simple circuit and many domestic audio manufacturers and enthusiasts of all ages, and some three have been on this basis to produce a CD machine, VCD machine Motorcycle with 20bit, 8 times oversampling fever class D / A board, and achieved good economic returns. However, there is still room for improvement on this DAC. This article describes the improvement although only adding a diode, but