关于Hugo2的滤波模式选择，Rob是这么说的。。。
本帖最后由 雪风 于 2017-12-24 20:24 编辑先说自己的听感：耳塞ER-4XR，坚持使用橘色（16FS）滤波模式。与白色（256FS）滤波模式相比，感觉录音中每个发声点的能量扩散更为自然，不冲，整体上更为安定踏实。然鹅。。。headfi上Rob的技术解释原文：
So here I am talking about the WTA filter, and I have assumed that the reader is aware of the WTA filter and why the recovery of timing of transients is important - so I assume you know already that more taps gives better accuracy, and much better sound, and that moving from 8 FS (output at 352/384 kHz) to 16 FS (output at 705/768 kHz) is seen as a benefit in SQ due to the improved time resolution of the output.
The FPGA is jam packed - I use all of the available DSP cores, all of the memory, and 99.8% of the logic too. The downside to all this is now the FPGA uses a lot of power, around 800 mW.
The output from the WTA 1 is now passed to another WTA filter (WTA 2) that takes us from 16 FS to 256 FS (output at 11.289.6/12.288 MHz) so now the WTA is working to a resolution of 88 nS.
The filter option is actually a big departure for me - I go for what is technically correct (assuming it sounds best), and don't give options. Now the HF filter is a technically correct option - as using the HF filter with HD files can reduce HF noise from the recording, which is not music but noise shaper ADC distortion and noise - if this gets into the analogue parts it can cause more noise floor modulation, so removing it will make it sound smoother. So having the HF filter is a technically valid option. But the 256 FS filter is always the more accurate option, and will recover the timing much more accurately than not using it. So why did I add this as an option?
Several reasons. I thought it would be cool for people to actually hear the effect of the WTA going from 16 FS to 256 FS. Normally, I do lots of listening tests, and so build up knowledge to allow better designs and future improvements, so I thought it would be good for one to hear the effects of 16 FS to 256 FS. What you hear is an immediate change in the ability to perceive the starting and stopping of notes. This quality is very different to the usual WTA benefits (better timbre, pitch, instrument separation and focus etc) in that being able to perceive the starting edge of a signal (the initial pluck of a string or how the piano sounds when instantly hitting the key) all depends upon timing accuracy going from uS down to tens of nS- so I thought it would be interesting to actually hear what I am talking about directly. Now this filter will be called the incisive option, as calling it Hugo is a bit confusing. Its incisive because you can now perceive the starting and stopping of notes much more clearly - and when the brain can't perceive the leading edges, then it becomes a blur and things sound soft.
The second reason for the filter options is that the incisive revealing nature of the filter does make it sound brighter. Now it is absolutely technically more accurate; it only sounds brighter because the brain can now more accurately perceive the starting and stopping of notes, and the starting and stopping transients have a lot of high frequency energy. When the brain can't perceive something, it simply ignores it, so it then sounds unnaturally soft, in that this is not truly transparent. But sometimes when you have say a bad bright recording, or say hard headphones, having a filter that allows you to hear high frequency energy may be a bit too much. But for sure you are using an aberration to hide another problem. So my advice is this; if you use the 16FS option (orange or red) all the time, then consider getting a warmer set of headphones, or trying out EQ. Normally you should be using white or green - I run with green all the time as its useful with 192 recordings. 简而言之：根本没有所谓的“mojo模式”、“hugo模式”，四种滤波模式之间不只是“味道不同”，而是“糊”跟“不糊”的区别。。。 承认吧，你就是喜欢糊:lol
hufi治百病 哈哈哈。。。木耳 另外，当耳机阻抗在300欧或以上时，Hugo2的放大部分（姑且这么表述吧，因为它貌似没耳放）才会工作在甲类状态。。。
还有，没事儿看了看what hifi的评测，ie800s的评价崩掉了。。。缺点竟然是：1.低频冲击力不足；2.动态疲软。。。 我使用白色灯。Rob很清楚。但有一点，DAVE并不是不吃转盘，而是不吃转盘的jitter，不然blu MK2卖谁啊。USB不是最好，而是最还原，如果数字源本身不好，那么USB就是还原的最不好，的确是最，但最和好不是一回事。 Hugo2 好听！
HUFI 好听！
你能怎么着？;P
谁用谁知道！ Hugo2还不错
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