martin vegas
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Both the dacmagic xs and he dragonfly aren't that good really..the dacmagic xs has the best sound of the two..getting the micro streamer instead!
So, how does this fare against odac, udac-3 or other similar priced dacs? I was originally going to go with fiio E10, its actually much cheaper but Dacmagic is available at my local store and i like the size of that thing. Its going to amp and replace my desktop and laptop soundcard. HD 650 and dt770 pro 80ohm headphones.
Title: Inferior sound quality when driving low-impedance loads such as IEM
Text: I have recently bought a brand new DacMagic SX. I am very happy with it so far - i like the handling, and of course the sound quality, as from every Cambrdge Audio product.
I also own the bigger brother "DacMagic Plus", and therefore something bothers me, regarding the smaller XS. It's the driving capability of In-Ear-Monitors(mostly from Westone - an American brand, IEM) which is so different to the DacMagic Plus.
While at the DacMagic Plus In-Ear-Monitors sounds absolutely fantastic, with the XS used, they suddenly sound like if you put over a blanket. There are no details and no stage anymore, and the Westone 4 are really good Quad-Driver Monitor, even with a small sound stage. Even the iPhone 5S or iPad Mini drives them better with their onboard opamps. (class d, so far...)
But on the other hand, listening with my "beyerdynamic DT880" or "AKG K701" is a complete joy with the XS, with at least the same quality as with the "DacMagic Plus". So it came to my mind, that it might has someting to do with the impedance, and so i studied the datasheets. The XS allows a minimum of 12 ohms, the Westone 4R has 30 ohms and - only for information - the DT880 has 250 ohms. While the datasheets of the "ESS"-Products are hard to find online, i read something about using a buffer opamp after the DAC, because the DAC cannot drive such kind of loads. But it makes no sense to me, because you are using the ES9023, which has an onchip 2V-driver stage. So actually i am not aware of whether Cambridge Audio's design uses a buffer or not. I mean, the Gain of the XS is completely OK, if not a little bit too high, even with driving a 250ohms load. But when it comes to using a 31ohms load, i can't even safely go up to 10 of the 53 volume steps without blowing my ears away.
So this is my feedback on that specific thing. I am sure, that this is a hardware issue, and not so easily solved by now, but maybe you want to include for example a switchable gain (like at the iBasso-Products) or just design the next revision with less amplification gain. Most of the people "on the go" uses earbuds, IEM or portable cans. So i think there is (virtually) no need for the possibility driving 600ohm-loads at high volume levels, as probably no one carry a 600ohm-version of a bulky HD650 with them on the go.
I am glad to hear your feedback on this. Kind regards from Austria,
Fabian
As i got a message about my post, that i should not complain, when buying such a cheap device. i d not expect it - but anyway - i have to add, that this is not about money. For me it's about engineering, quality and fun. HiFi is basicly (as for me) not how expensive some devices are, and others not...expensive does not implicate good, and cheap does not implicate bad...
Meanwhile i managed to get a Lightning-to-USB-Camera-Adapter from Apple. It's a cable at approx. 30€ - which is far more in $...
As is also ordered an C5D from LDS Labs, therefore i'll need it anyway. The CA DacMagix XS also supports USB Class 1.0 - which should be supported by iOS7. But iOS shows a screen, that the XS consumes too much energy. (message is in German...) I'm not wondering about it - Cambridge Audio does not say, that it's compatible with iOS-Devices - and the XS also gets really warm when in use, due to the XMOS-Processor doing the USB implementation, i guess. (XMOS is capable of USB 1.0 and 2.0 switchable and supporting high-samplerate. However it's not energysaving at all...)
But it was worth a try...
kind regards
Fabian
I'm not sure about you Fabian, but in the packaging of my Dacmagic XS there was a note saying that the device will get warm, this is part of the normal operation of the device.