Measurements of Audirect Beam 3 Plus BT/USB DAC/HPAmp

Audirect 这家之前我有过测量:Measurements of Audirect Atom2 Portable DAC,那次是厂家送测,而这次是由网友送测的 Audirect Beam 3 Plus 蓝牙/USB大尾巴,由于送测者没有给我资料……只能草草测之:

Photo
Photo

这个大尾巴我目前最头疼的是网上很难找到资料…… 不管了 测一波USB:

UNBALDashboard
UNBALDashboard
BALDashboard
BALDashboard

Dynamic-Range
Dynamic-Range

动态范围不算很好,看下仪表板:

-60dbFS
-60dbFS

似乎主要问题在于底噪略高:

NoiseNoWt
NoiseNoWt

Linearity-(-20
Linearity-(-20
THD+N-Ratio-vs-Freq
THD+N-Ratio-vs-Freq
SMPTE-Ratio
SMPTE-Ratio
Multitone
Multitone
12K
12K
BAL-THD+N-Ratio-vs-Measured-Level
BAL-THD+N-Ratio-vs-Measured-Level

总结:有进步

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