绿联也出小尾巴?这是我之前未曾设想的道路……前阵子某群(0hz)里有人说要给我寄一个绿联的小尾巴 UGREEN USB DAC ,东西到物业之后我其实根本没办法去拿(腰……)直到老婆大人某次去拿快递我才好说歹说让她帮我带上来……
![%title插图%num Photo](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/Photo-2-1024x683.jpg)
整体做工(包括包装盒)感受一般,考虑到价格…… 能忍.
上555之后首先就发现典型的USB干扰问题,于是拿出BW光纤隔离和某秘密隔离分别测一下底噪:
无隔离:
![%title插图%num Noise](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/Noise-1-1024x563.jpg)
BW:
![%title插图%num NoiseBW](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/NoiseBW-1024x563.jpg)
另一个:
![%title插图%num NoiseNew](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/NoiseNew-1024x563.jpg)
![%title插图%num ISODashboard](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/ISODashboard-1024x563.jpg)
![%title插图%num Dynamic-Range](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/Dynamic-Range-2-1024x384.jpg)
![%title插图%num Linearity-(-20](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/Linearity-20-1-1024x779.jpg)
![%title插图%num THD+N-Ratio-vs-Freq](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/THDN-Ratio-vs-Freq-2-1024x828.jpg)
![%title插图%num SMPTE-Ratio](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/SMPTE-Ratio-2-1024x863.jpg)
43131的0db照例:
![%title插图%num Multitone-0](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/Multitone-0-1024x821.jpg)
![%title插图%num Multitone-1](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/Multitone-1-1-1024x707.jpg)
12K真的难看:
![%title插图%num 12K](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/12K-1-1024x541.jpg)
![%title插图%num THD+N-Ratio-vs-Measured-Level](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/THDN-Ratio-vs-Measured-Level-VRMS-1024x408.jpg)
拿来验证隔离器倒是一个好样本:
![%title插图%num ISONOISE](https://cdn.l7audiolab.com/wp-content/uploads/2021/07/ISONOISE-1024x541.jpg)
绿联也出小尾巴?这是我之前未曾设想的道路……前阵子某群(0hz)里有人说要给我寄一个绿联的小尾巴 UGREEN USB DAC ,东西到物业之后我其实根本没办法去拿(腰……)直到老婆大人某次去拿快递我才好说歹说让她帮我带上来……
整体做工(包括包装盒)感受一般,考虑到价格…… 能忍.
上555之后首先就发现典型的USB干扰问题,于是拿出BW光纤隔离和某秘密隔离分别测一下底噪:
无隔离:
BW:
另一个:
43131的0db照例:
12K真的难看:
拿来验证隔离器倒是一个好样本:
那么,什么时候能看到“某秘密隔离”呢?
……
想知道那些480M速度的隔離器到底是用哪個晶片組
拓品隔离器快出啊
這個新玩意算光纖還是電氣隔離?