specification
{"json":"[{\"index\":\"0\",\"tran_label\":\"Model\",\"tran_value\":[\"S48.4D\"]},{\"index\":\"1\",\"tran_label\":\"Input\",\"tran_value\":[\"4 Ch High Level/4 RCA/BT(External)\"]},{\"index\":\"2\",\"tran_label\":\"Output\",\"tran_value\":[\"4 High Level/8 RCA\"]},{\"index\":3,\"tran_value\":[\"Class D\"],\"tran_label\":\"Amplfiier type\"},{\"index\":\"4\",\"tran_label\":\"Power Output\",\"tran_value\":[\"4x50W RMS @ 4 OHMS\",\"4x70W@ 2 OHMS\"]},{\"index\":\"5\",\"tran_label\":\"(AD & DA) Signal Convertion\",\"tran_value\":[\"CIRRUS LOGIC 32Bit DSP\"]},{\"index\":\"6\",\"tran_label\":\"Sampling Rate\",\"tran_value\":[\"AD/DA Converter 24-bit/192kHz\"]},{\"index\":\"7\",\"tran_label\":\"EQ/Delay\",\"tran_value\":[\"31Band EQ/ 15ms\"]},{\"index\":\"8\",\"tran_label\":\"Frequency Range\",\"tran_value\":[\"20Hz- 20Khz\"]},{\"index\":\"9\",\"tran_label\":\"THD +N\",\"tran_value\":[\"＜1%\"]},{\"index\":\"10\",\"tran_label\":\"Operating Voltage\",\"tran_value\":[\"9-16V\"]},{\"index\":\"11\",\"tran_label\":\"Auto tuning\",\"tran_value\":[\"yes\"]},{\"index\":\"12\",\"tran_label\":\"PC Software& mobile app\",\"tran_value\":[\"yes\"]}]","type":"2"}