61键(对于非专业人士,61键的音域已经足够宽了,根本不需要88键)功能完好,音色好,是双侧喇叭(提到这一点是因为有些低一档的是单侧喇叭) 型号: Yamaha PSR-170 带谱架,Song book(法语和日语),和电源变压 ...
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