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合并功放就是指将前后级功放合并在一起,既做音频信号接收、处理,又做大功率输出放大。 Hi-Fi 的前级功放分为有源和无源,有源的前级通过电源把信号放大,而无源的前级就只有调节音量的功效。不过现在这个年代无源的前级功放已经非常少了,因为音源与后级的内阻有很大分别,只靠一个音量开关把音源与后级连接起来,内阻...
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对于Hi-Fi 来说,前级功放更多的是做音频信号接收、调节音量以及基础的信号放大,而后级功放则单纯作为输出放大,功率更大,输出只要有足够好的音箱都可以推出好的效果。合并功放就是指将前后级功放合并在一起,既做音频信号接收、处理,又做大功率输出放大。