【2/21更新】建议使用RCA的DAC1用户购买XLR TO RCA

968pst · 发表于 2013-2-8 15:37:50

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我使用的是RCA输出，因为功放只有RCA
看香港有玩家说XLR转RCA比RCA声音好
How to get better sound from DAC1 RCA interface?

I did some experiment today with a XLR-to-RCA converter.

I compared :

1/ dac1 RCA -> preamp
2/ dac1 XLR -> RCA -> preamp (factory setting of -20db　ＸＬＲ output attenuation)
3/ dac1 XLR -> RCA -> preamp (-10 db XLR output ａｔｔｅｎｕａｔｉｏｎ)
4/ dac1 XLR -> RCA -> preamp (-0 db XLR output ａｔｔｅｎｕａｔｉｏｎ)

XLR　ｏｕｔｐｕｔ　ｉｓ　ｉｎ　ｇｅｎｅｒａｌ　ｂｅｔｔｅｒ　in terms of details and smoothness. -20 db volume setting is a bit too low. The -0 db volume setting is too loud (unless you are using passive preamp). At the end, we all agreed that XLR (-10db setting) converted to RCA delivered the best sound.

For those who is using RCA interconnect to preamp sound consider buy and borrow a converter and try it out. It is just great to make the best sounding DAC1 sounds even better.

外国佬也有这样玩
In the end Cardas made me a couple of adapters with the 3-pin floated, with no extra charge for the custom order. I've had a few days to A/B the RCA vs. XLR outputs and to play with the attenuation jumpers inside.

Results: XLR output > adapter > unbalanced interconnect > amp is clearly better than the RCA out, which revealed an audible graininess on congested peaks and some sibilants. The XLR was much, much smoother.

I also preferred the -10dB jumper setting, which was quite close in output level to the fixed-level RCA outs. The -20dB setting was a little anemic, while in my setup the dynamics from the the 0dB output were a little flat. (Benchmark recommends using a jumper setting that yields normal listening levels north of 11:00 on the DAC1 volume control, and to do so I had to turn the stepped attenuator on the tube integrated from noon to less than 10:00.) -10dB was the Goldilocks setting for me.

Bottom line: if you're using the RCA outs, getting the $58 Cardas adapter (Moon Audio sells 'em cheaper than Music Direct) for the XLR out is a clear improvement.

昨晚辛苦做了一对CARDAS XLR RCA转接头，跳线到-10db，听下来素质比直接RCA好
具体的：
XLR TO RCA声音细致精细干净顺滑，分离度高，同时味道清淡点
RCA有点模糊粘连膨胀毛糙，两头有点缩，但奶油味道不错

[ 本帖最后由 968pst 于 2013-2-21 14:03 编辑 ]