很久很久以前歌诗德的老黄就说要开发一台分立式R2R解码.实话说我对分立式R2R是没有什么期待的……这玩意即使强如hifiman在没有经验的情况下也是开发的一地鸡毛。但是经过长达两年的折腾之后,老黄还是拿出了这台 Gustard R26 :
![Photo Photo](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Photo-2-1024x683.jpg)
![Rear Rear](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Rear-1024x683.jpg)
![%title插图%num Photo2](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Photo2-2-1024x683.jpg)
![Photo3 Photo3](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Photo3-1-1024x683.jpg)
![Teardown1 Teardown1](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Teardown1-1024x683.jpg)
![Teardown2 Teardown2](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Teardown2-1024x476.jpg)
![Teardown3 Teardown3](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Teardown3-1024x683.jpg)
![Teardown4 Teardown4](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Teardown4-1024x683.jpg)
![%title插图%num Teardown5](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Teardown5-1024x683.jpg)
除了新的R2R模块之外,内部整体的布局粗看不说和之前的X26Pro非常相像吧,至少也可以说是一模一样……但细看,这货多了网络功能!我们暂且按下不表,先开始测量:
![UNBALDashboard UNBALDashboard](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/UNBALDashboard-1024x560.jpg)
![BALDashboard BALDashboard](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/BALDashboard-1024x560.jpg)
满幅的测量值会好一些:
![%title插图%num UNBALDashboardFull](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/UNBALDashboardFull-1024x560.jpg)
![%title插图%num BALDashboard5V](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/BALDashboard5V-1024x560.jpg)
怎么说呢,95上下的SINAD,和HoloAudio这样的变态厂家确实还有差距。但是比上我网站测试的别的(除Holo)之外的无论是否分立的R2R,这个数据也不是不能看。比方说SMSL售价2W多的D3是95上下。售价万元左右还广受好评的精音D1000才90上下。之前绿檀吹的小不点DAC8,价格和R26差不多……还是纯解码 1K THD+N才0.0055%也就相当于85上下的SINAD……所以虽然我觉得不算特别好,但横向对比在R2R里面95上下的SINAD已经不算差了。
不过内置的DSD直解模块有点魔法过头了:
![DSDDashboard DSDDashboard](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/DSDDashboard-1024x560.jpg)
反而是关掉更好一些(默认是关了的):
![DSDtoPCMDashboard DSDtoPCMDashboard](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/DSDtoPCMDashboard-1024x560.jpg)
![Dynamic-Range Dynamic-Range](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Dynamic-Range-2-1024x384.jpg)
![Linearity-(-20 Linearity-(-20](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Linearity-20-2-1024x777.jpg)
![%title插图%num THD+N-Ratio-vs-Freq](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/THDN-Ratio-vs-Freq-2-1024x834.jpg)
![SMPTE-Ratio SMPTE-Ratio](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/SMPTE-Ratio-2-1024x826.jpg)
![Multitone Multitone](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Multitone-1-1024x816.jpg)
![Crosstalk Crosstalk](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Crosstalk-1024x832.jpg)
还是那句话,测量数据在R2R里面中上水平。不过12K有点不好看:
![12K 12K](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/12K-1-1024x702.jpg)
![12KZoom 12KZoom](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/12KZoom-1024x541.jpg)
底部很低,但是旁瓣不少。是不是歌诗德为了卖时钟进行的阉割呢?(R26是有10M时钟输入的)我不得而知。不过即使是不接时钟旁瓣也没有高过-135db……用Amir的话来说”听不到的“
番外篇:R26是有OS和NOS方式的。测量了下:
![DF DF](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/DF-1024x541.jpg)
然后对比下THD+N扫频:
![THD+N-Ratio-OS-NOS THD+N-Ratio-OS-NOS](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/THDN-Ratio-OS-NOS-1024x834.jpg)
在AES17下高频THD+N还是比较大(没有到ButterWorth的那么离谱)原因是因为高频下有低频的互调了:
![%title插图%num 20KFFT](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/20KFFT-1024x711.jpg)
但是其实个人觉得R26最重要的是网播模块:
![Roon Roon](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Roon-1024x586.jpg)
![Roon2 Roon2](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Roon2-1024x586.jpg)
![Airplay Airplay](https://cdn.l7audiolab.com/wp-content/uploads/2022/06/Airplay-947x1024.jpg)
总结:中上水平的R2R,但是在功能上有突破(内置了支持Roon的网播模块)。考虑到不算离谱的价格和还不错的外壳做工,个人觉得还行。图上的转圈和白色扭头分别给NOS高频失真+噪声略微大和内置时钟的12K不算优秀。
有空测测dsd信号,进去是分立sdm电路处理的,想看那个性能
70
草,咕牌也出魔法机了
我一会补一下 差点忘了这个
什么系统啊?不能能刷APP进去?最强机顶盒有没有希望啊?
狼的评价
这个价格这个做工这个数据可以玩玩嘛,比阿福带货那开源组装机起码性价比高好几倍。
是
互调扫频倒是比很多分立r2r整齐一点
歌诗德倒是一如既往地走老烧和科学通吃地路子啊
全都要.JPG
ROON,土豪啊。
赶时髦玩网播的老烧狂喜……
搞不懂了,现在折腾R2R是为了啥(holo是例外)?那种独特的声音?
怎么说呢 有需求所以有生产
不能指望每个人都有科学正确的听音观或愿意通过科学的训练来培养正确的听音观,R2R的一些失真更受老烧们欢迎。不过连我这种追求科学的有时候都希望通过其他手段添加一些染色
长期hifi教育,已经打下思维钢印,R2R才是真HIFI
《强如hifiman》
50mv怎么样?
耳放才看50
12k jitter如果用i2s輸入會改善嗎
对R2R没有信仰。既然要科学,就不能玄学,这指标太弱了。