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直热管2P2原用于电池收音机作低频功率放大,此管用于音频功放电路前级电压放大,动态范围大,适应性强,线性好,音色靓,发音直接,透明度高,尤其使人声乐曲细腻流畅,不少胆友用此管制作前级,并取得满意的音效。为了充分发挥2P2的属性和风格,全面提高直热管在前级中特有的魅力,笔者
Direct heat pipe 2P2 was originally used for battery radio for low-frequency power amplifier, the tube for the audio amplifier circuit voltage amplification, dynamic range, adaptability, good linearity, good tone, pronounce the sound, high transparency, especially the vocals Smooth, many bile friends with this control for the pre-class, and achieved satisfactory sound. In order to give full play to the properties and style of 2P2, to enhance the charm of direct heat pipe in the previous stage, the author