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Rapparee
12
Sep 23, 2017
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Having made a mistake buying the CEntrance and finding it won't work with my iPad Air 2, I'm wary about this product even though it looks like what I might need, at a price I can just afford, to drive my 300ohm headphones from the iPad. Has anyone got any known problems with this configuration, apart from the fact that headroom is likely to be tight? Is there anyone using the same setup as I'm proposing who can confirm that the performance is satisfactory? Or is the headroom just too tight? Would I be better off looking for a more powerful amp only? if one can be found at a similar price?
I also see that the inclusion of the 12v power adapter is not specifically included, (though it is implied in the "Note: At checkout, you’ll have your choice of 110v or 220v AC Adapter power supply.")
Which raises other questions; Here in Australia, I believe the standard power is 230v, but only a 220v option is offered. Will this be a problem? And, if that is not a problem, will I have to change the plug, or get an adapter, for Australia, or will that be done by Massdrop, who are aware of where it is to be shipped?
Sep 23, 2017
ed3226a1f8
1
Sep 23, 2017
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RappareeI'm also from Australia and have the same question
Sep 23, 2017
MetaMorph
66
Sep 23, 2017
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RappareeI don't think this is the best choice to use from an iPad. Something like the Audioquest Dragonfly would make more sense, plus the black model is $50 cheaper than this. It's shaped like a flash drive and the latest generation are designed to be compatible with mobile devices, powered purely via USB. Mine runs from my Android just fine, and has enough power to easily drive my K7XXs. The red model is a bit more expensive but has even more power if you need it.
Sep 23, 2017
MetaMorph
66
Sep 23, 2017
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ed3226a1f8The power standards (AS60038) adopted in 2000 list the acceptable deviation from 230V as being +10%, -6%, or 216-253V, so 220V is perfectly fine.
Sep 23, 2017
Rapparee
12
Sep 24, 2017
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MetaMorphAre you eferring to the 02+SDAC or the CEntrance when you say it's not suitable for the iPad. I already know, to my cost, that the CEntrance isn't. What I'd like to know is if there are any problems using 02+SDAC with the iPad Air 2.
Thanks for your answer on the Aussie voltage question.
Sep 24, 2017
MetaMorph
66
Sep 24, 2017
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RappareeI don't think the ODAC would be able to be powered from an iPad. There isn't any reason for them to spend the effort to use a super-power efficient USB controller, etc, when it isn't designed to be used with a portable device. Just having a quick look at the spec sheet for the micro-controller they used it lists its power consumption at 310mA, which from memory is far above what the apple adapters provide. Plus, you are going to have to have the O2 plugged into its power brick anyway.
Sep 24, 2017
Rapparee
12
Sep 24, 2017
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MetaMorphThanks for that. I was aware the ipad by itself wouldn't be able to power the 02+ODAC. But I thought the ac adapter was there to take care of that. I suppose I'll have to give some more thought to this before I make a decision. Thanks again.
Sep 24, 2017
tessierpg
Sep 24, 2017
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RappareeMr. Grace explained it before on Massdrop for the SDAC standalone unit: you may plug it to a phone, for instance an iPhone or iPad using the CCK lightning to USB adapter (followed by a standard USB to micro USB cable). The only problem, which has a solution, is that the SDAC enclosed in the O2 combo is USB powered, and the iPad or iPhone´s USB output is not powerful enough to power the SDAC. The solution is simply to plug an apple Power adapter with lightning cable to the Apple CCK connector (the USB3 CCK model has three ends: the lightning input, a lightning output and a standard USB 3.0 output) or if using another CCK connector (the Regular Apple USB CCK 2.0 which has only a lightning input and a usb 2.0 standard output) or using a USB connector for another kind of phone (Android), then you may use a small USB 2.0 powered hub (you may find a small one on Amazon with AC power transformer and outlet for less than 20$) with one connector plugged from you phone, one connector plugged to your O2/SDAC and a third connector providing the power the the AC outlet adapter. Something like this one: https://www.amazon.com/AmazonBasics-Port-2-5A-power-adapter/dp/B00DQFGH80/ref=sr_1_fkmr3_2?ie=UTF8&qid=1506292264&sr=8-2-fkmr3&keywords=Usb+hub+amazon+essentials Hope it helps.
Sep 24, 2017
Rapparee
12
Sep 24, 2017
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tessierpgWow! That's a very comprehensive answer. Thank you. I think you've solved my problem, in a number of different ways. I guess that means I'm in.
Sep 24, 2017
spaceranger
2
Jan 27, 2018
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tessierpgI used the Belkin Rockstar http://www.belkin.com/sg/p/P-F8J198/ but my iPhone 7 still says SDAC is using too much power.
Jan 27, 2018
Rapparee
12
Jan 27, 2018
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spacerangerI suggest, when hooking up the whole assembly, you try connecting the iphone last so that it’s already powered before connecting to the iphone. Goog luck.
Jan 27, 2018
spaceranger
2
Jan 28, 2018
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RappareeThanks for the suggestion, I tried...it doesn't work. Need a way to power up the SDAC separately. Also tried a powered hub, still the same issue. Must be a way to resolve this.
Jan 28, 2018
Rapparee
12
Jan 28, 2018
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spacerangerIn the end I decided not to buy the Sdac. I found my ipad worked with my Centrance Dac/Amp and powered hub but only if I connected the whole assembly to the power before connecting to the iPad. Otherwise i got the same message you get.. if it doesn’t work for you I hope you can find another solution.
Jan 28, 2018
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