你是买来想改解码器吧，其实挺简单的，买接收板焊上就行，就是这机子声音很差，没有高频，收音机的特性

Equipped with MMB (Multiple Multi-Bit) type D/A converter, which boasts excellent performance and sound quality. CS-PCM satellite digital B mode exceeds CD standards with 48 kHz sampling frequency, 16-bit linear quantization method, and boasts a high sound quality that is almost identical to DAT.
The digital filter is equipped with an 18-bit 8x over-sampling digital filter. The digital filter increases the input digital signal by repeating it far away from the music signal, lowering the sequence of the second analog filter to reduce phase rotation.
The PCM tuner part is equipped with VITABI composite (voice data composite system) LSI and PCM composite LSI. Equipped with an antenna adjustment switch that allows you to easily adjust the antenna and antenna input level display function.
Active filter uses GIC (Generalized Immitance Converter) 3-dimensional butterworth filter with low phase rotation. For connecting to digital devices, it is equipped with two types of digital output terminals of Toslink and Coaxial RCA. Digital recording is possible by connecting a digital recorder such as DAT.
The analog output terminal is equipped with an XLR type connector for balance and RCA type connector for unbalanced use. The balanced output is constructed with a fully balanced circuit floating from the ground. It can eliminate noise induced by external noise during transmission and prevent degradation of sound quality. Built-in core tech scramble decoder