無知の誉れ20 Mazda GJｱﾃﾝｻﾞ 純正BOSEｱﾝﾌﾟ＆DAC高音質化開始！
MazdaのBOSEの音は正直私は好きじゃありません。乗り始めの当初はノーマルでどこまで改良できるか改良してきましたが、今回は根本的にﾏﾂｺﾈﾕﾆｯﾄをやり、今回はBOSEｱﾝﾌﾟ＆DACの改良を行っていきます。 ﾏﾂｺﾈのUSB電源改良だけでもかなりの音質改善ができました。ここからは心臓部に突入です！！ 今回はコンデンサ交換予定
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