Melco C1 SFP+ Direct Attach Cable : the first in audiophile market
- Thread starter CKKeung
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From listening impressions there seems to be a pattern that 24AWG DAC cables are superior sounding to 30AWG cables.
For example the Melco is 24AWG while the Taiko original mentioned by @Nils is 30AWG.
I don't want to claim that the Melco is superior only because it uses 24AWG, far from it.
But when comparing DAC cables it makes more sense when all cables in the comparison use 24AWG wiring and have the same length.
For example the Melco is 24AWG while the Taiko original mentioned by @Nils is 30AWG.
I don't want to claim that the Melco is superior only because it uses 24AWG, far from it.
But when comparing DAC cables it makes more sense when all cables in the comparison use 24AWG wiring and have the same length.
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Republicoftexas69
Well-Known Member
The DAC standard require a 100 Ohms impedence - this is obviously impacted by the cable's length.
That is why MELCO only supplies their cable in 2m length.
The stock IT DAC cable supplied by Taiko comes in 0,5m ... 7m lengths...
That is why MELCO only supplies their cable in 2m length.
The stock IT DAC cable supplied by Taiko comes in 0,5m ... 7m lengths...
DAC impedance is its characteristic impedance. It can't be measured with a simple ohmmeter and is unaffected by length.
"Characteristic impedance is determined by the geometry and materials of the transmission line and, for a uniform line, is not dependent on its length."
Characteristic impedance - Wikipedia
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Republicoftexas69
Well-Known Member
Melco claims otherwise and designed this cable and found that the 2m length had the best properties and sound?.DAC impedance is its characteristic impedance. It can't be measured with a simple ohmmeter and is unaffected by length.
"Characteristic impedance is determined by the geometry and materials of the transmission line and, for a uniform line, is not dependent on its length."
Characteristic impedance - Wikipedia
en.wikipedia.org
Regardless of what anyone claims, cable length is in no way related to the specified 100 ohm characteristic impedance of a direct attach cable. Nor of a coax cable, clock cable, microphone cable, ethernet cable, etc.
Republicoftexas69
Well-Known Member
Sorry it was from an article on the cable. Regardless they are quoting Melco.
The new Melco C1-D20 SFP Direct Attach cable is expected to deliver “unsurpassed performance,” according to the manufacturer.
If you are looking to fine-tune your high-end installation, it is definitely time to start getting interested in cabling at some point. If you have devices with an SFP port, the new Melco C1-D20 SFP cable may come in handy, for example. It allows you to bypass traditional network connections. Plus, you have direct control over plug, cable and electronics. The Melco C1-D20 cable is covered in a braided PVC jacket. Inside the cable you will find two silver-plated OFC conductors. Each of those conductors is in turn separately shielded.
The cable is only available in a length of 2 meters, according to the manufacturer, that is part of the design. You’ll have to pay €899 for the C1-D20.
Republicoftexas69
Well-Known Member
Republicoftexas69
Well-Known Member
From Melco site.
- Two metres long and designed to reflect the requirements of transmitting digital audio where stability and minimising errors are more important than absolute transmission rates.
None of that relates impedance to length, which is what we are discussing. Cable construction affects impedance, and implemented correctly will match the required spec for a dac; 100 ohms, +/- 10%. Length is not a factor in that spec.
Republicoftexas69
Well-Known Member
Don't kill the messenger. It is their design. And it is repeated multiple times in various articles and reviews. Think I will put my money on the OEM on this one. I have no horse in this race. My give the Amphenol product a try though, in a 2m length.
Good idea
Amphenol SFP+ 10GbE direct attach passive copper cable (DAC), quad-shielded 30 AWG twin-axial SKEWCLEAR wire(SF-SFPP2EPASS-002)
Torben
Republicoftexas69
Well-Known Member
Torben. You have given this cable a try?Good idea
(SF-SFPP2EPASS-002)
View attachment 133914
Torben
If so what are your impressions?
It came yesterday from the US. First impression very positive, but i will compare later this WE
Torben
Republicoftexas69
Well-Known Member
Republicoftexas69
Well-Known Member
I actually find that I prefer the sound of my FCBG110SD1C01 over my FTLX1475D3BTL in my system and the optical cable is direct attach. Did place an order for the Amphenol DAC 2m will be here next week. More to come...
Republicoftexas69
Well-Known Member
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