Oukkidoukki
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So our perfect ( math) dac M400 in the video sounds clearly darker or should I say muffled than d400ex. Was up with this? Didn’t the numbers say there can’t be difference?
It could be down to the differing Isolators being used?We're judging based on a YouTube video?
Or the DACs aren't both compatible with the cables he usedIt could be down to the differing Isolators being used?
I wonder does output impedance have any effect on DAC's?
I recall seing a list in some thread the other day with some models from same manufacturer did have diffrent output resistance values. some araound 2K while others could be 10K.They clearly are using different isolator feet. That could make a world of difference.
Based on the color of the DAC I suspect the silver one will sound brighter than the black one which will be dark sounding.
But the silver one has I2S connection and playing DSD while the black one is using 44.1kHz via the always worse sounding USB connection.
Thank goodness it is SMSL vs SMSL.
Hmm.... I should probably watch the video and see what they are on about.
You can stop wondering. The output resistance of the line-outs do not not affect the tonality. They can't and are probably the same anyway.
IF there really are differences it is probably due to different default or set reconstruction filters.
With a long enough cable you'll get significant high frequency roll-off. I suspect that's like 25 feet.I recall seing a list in some thread the other day with some models from same manufacturer did have diffrent output resistance values. some araound 2K while others could be 10K.
So our perfect ( math) dac M400 in the video sounds clearly darker or should I say muffled than d400ex. Was up with this? Didn’t the numbers say there can’t be difference?
So only if you have real long connections should it be and issue then?With a long enough cable you'll get significant high frequency roll-off. I suspect that's like 25 feet.
You just saved us the trouble measuring it.There's more than 2dB of difference in levels between the two recordings. It's pretty obvious why there would be an audible difference.
Long cables, or some super high capacitance cable.So only if you have real long connections should it be and issue then?
My previous values might have been something else as I went around and checked a few other DAC's and they had 100Ohm for RCA and some other models had 100 & 200Ohm for XLR connections. So there is variance. Not seen any data on if does matter at all though.
Found one with only 20 Ohm RCA.
So our perfect ( math) dac M400 in the video sounds clearly darker or should I say muffled than d400ex. Was up with this? Didn’t the numbers say there can’t be difference?
M400 appears to be 610ohm (due to a muting circuit), XLR = 1.2k. Even with 1.5nF on cable capacity there still is no audible effect.I recall seing a list in some thread the other day with some models from same manufacturer did have diffrent output resistance values. some araound 2K while others could be 10K.
i think it's safe to say this test lacked certain controls.Lazily looking at my level meter there appears to be some differences in peaks between the two samples, no level matching going on? Even a 1-3 dB difference can change the perceived tonal balance of a tune. Feels like a subtle suckout in HF but I'm not sure if that's just due to the recordings. The camera/mic position also seems to change between recordings, and some stuff that looks like blankets/throws in the right corner- the position of the laptop screen changes as well.
ExactlyWhat's up with it is that youtube videos shot on camera phones aren't suitable for assessing audio quality. Especially when the DUT are played at different volume levels.