这是一台胆前级,来自张兴富音频工作室,是一个群里的大佬送测的。我看了下资料,这前级的电路仿自南瓜的PL-L前级。作为一个胆前级来说,宣称的指标是相当不错的,原厂的频响达到了20Hz-100kHz +0/-1dB 而这台更是宣称频率响应:10 Hz-100 kHz。
![%title插图%num XFPhPhoto](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/XFPhoto-1024x683.jpg)
![%title插图%num XFPh Rear](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/Rear-1024x370.jpg)
总体来说,机箱前面板做工不算精致,但是后面板还不错(倒装的XLR口有点不适应……)不废话了 开始测量:
![%title插图%num XFRCADashboard](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/XFRCADashboard-1024x560.jpg)
![%title插图%num XFXLRDashboard](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/XFXLRDashboard-1024x560.jpg)
就胆前级来说,这算是一个高指标的设备!尤其是参考stereophile的测量,还是有点接近的(包括下面贴出来的曲线)
![%title插图%num XFDynamic-Range](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/XFDynamic-Range-1024x384.jpg)
![%title插图%num XFLinearity-(2](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/XFLinearity-2-1024x777.jpg)
![%title插图%num XFTHD+N-Ratio-vs-Freq](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/XFTHDN-Ratio-vs-Freq-1024x833.jpg)
单端频响没有宣称的那么好(但其实还行):
![%title插图%num XFRCA-Relative-Level-(1](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/XFRCA-Relative-Level-1-1024x796.jpg)
平衡输出的频响受到更多制约:
![%title插图%num XFPh XLR-FR](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/XLR-FR-1024x796.jpg)
![%title插图%num XFXLR-SMPTE-Ratio](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/XFXLR-SMPTE-Ratio-1024x863.jpg)
Crosstalk我测过 但是忘了存下曲线了(和原厂很接近 都不好)
![%title插图%num XFRCA-Multitone](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/XFRCA-Multitone-1024x820.jpg)
![%title插图%num XFXLR-Multitone](https://cdn.l7audiolab.com/wp-content/uploads/2021/01/XFXLR-Multitone-1024x820.jpg)
总结:XLR输出牛的水平不如原厂,别的方面…… 有个八成相似度?
考虑到价格 还行
哪里买得到?