这台 Erato M7 胆前级 之前我草草的测过,然后推荐给了不少身边的朋友。这次又拿到一台是朋友二次购买的(他之前买过一台,然后看到又有合适的就又买下来收藏……)为啥推荐呢?因为……便宜又好啊……这台机器似乎早已停产,二手3K上下的价位(其实我一手也是3K左右买的)在我看来近乎是白送的……因此我决定以这台机器为开头,做一个#失落的神器#专栏,专门介绍一些流失在时间长河中的高性价比设备……
![%title插图%num Photo](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Photo-1-1024x683.jpg)
![%title插图%num Rear](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Rear-1024x683.jpg)
这货甚至还有热机倒计时(继电器联动!):
![%title插图%num WarmUp](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/WarmUp-1024x683.jpg)
后部照片中,敏感的人应该能够注意到,这玩意居然是有平衡输出的!平衡出的胆机不多哦……看看内部:
![%title插图%num Teardown1](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Teardown1-1024x683.jpg)
![%title插图%num Teardown2](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Teardown2-1024x683.jpg)
![%title插图%num Teardown3](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Teardown3-1024x683.jpg)
经典的马兰士7前级放大架构辅以现代的电源电路设计,单片机控制的热机功能,带遥控(可以兼容Apple遥控器)输入切换和继电器音量……看起来很清晰明了的橙黄色OLED显示上甚至贴心的设计了防烧屏保护功能……伦达LL5402的音频输出牛(光这对牛都得1K多了吧……)乃至于明确的分区设计(对减少底噪、干扰有好处)……更何况还有手感良好的铝合金机壳(含前面板、顶盖、)让我在这个价位上无法再要求什么……不过还是看测量:
![%title插图%num UNBALDashboard](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/UNBALDashboard-1-1024x560.jpg)
![%title插图%num BALDashboard](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/BALDashboard-1-1024x560.jpg)
仪表板的2/4V电压下5XSINAD在胆机里面属于非常正常,而且难能可贵的是,电源相关的噪音非常少……看看之前测量的欧博胆机……
![%title插图%num Dynamic-Range](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Dynamic-Range-1-1024x384.jpg)
![%title插图%num Relative-Level-(1](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Relative-Level-1-1024x795.jpg)
![%title插图%num Linearity-(2](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Linearity-2-1024x777.jpg)
![%title插图%num THD+N-Ratio-vs-Freq](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/THDN-Ratio-vs-Freq-1-1024x832.jpg)
![%title插图%num SMPTE-Ratio](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/SMPTE-Ratio-1-1024x820.jpg)
![%title插图%num MultitoneALL](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/MultitoneALL-1024x522.jpg)
不同电平下的多音:
![%title插图%num %title插图%num](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Multitone4.jpg)
![%title插图%num %title插图%num](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Multitone04.jpg)
![%title插图%num %title插图%num](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Multitone004.jpg)
![%title插图%num %title插图%num](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Multitone0004.jpg)
在THD-Level图上也可以看出来:
![%title插图%num THD-Level](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/THD-Level-1024x816.jpg)
更直观的可以用下面这组图观察:
![%title插图%num 1K-FFT-Spectrum](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/1K-FFT-Spectrum-1024x541.jpg)
![%title插图%num %title插图%num](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/1K-FFT-Spectrum-4V.jpg)
![%title插图%num %title插图%num](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/1K-FFT-Spectrum-04V.jpg)
![%title插图%num %title插图%num](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/1K-FFT-Spectrum-004V.jpg)
![%title插图%num %title插图%num](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/1K-FFT-Spectrum-0004V.jpg)
![%title插图%num Distortion-Product-Ratio](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Distortion-Product-Ratio-1024x719.jpg)
可以看到奇次谐波明显少于偶次
![%title插图%num Volume](https://cdn.l7audiolab.com/wp-content/uploads/2022/03/Volume-1024x524.jpg)
总结:#失落的神器#
意外的很不错诶!(二手市场价格抬高.jpg
失落的神器!!
大慈善家!
某寶搜了看看,一手要8K多了
8K价格不够性价比了 3K左右很香
关键词要搜啥,完全找不到…想看看他家还做别的不
现在他家生产的东西和价格基本上都是虫豸
啊这…果然是失落的神器
现在叫啥名字了。。。
测测他家的dac?好的话去收个。。。
据说管子有好几种组合更换方式
失落的神器竟然比拓品pa5二手还稀有
🐮歌?