So things didn't quite work out as planned. I had tried to give U5 a good reflowing and ended up creating a big mess. I had to use chipquik to remove the whole chip. In the end I lifted a solder pad - pad 21 to be exact. From the looks of the schematic it doesn't look like pin 21 is in use. However, it seems like another pad near 21 is damaged as well. What would you guys do? Just buy a new y2 board and reuse some parts like caps, etc? or just try and replace U5 and hope for the best?
There is no attenuator in the standard build. It can be used to drive headphones with a preferred opamp substituted for this purpose, but you need to supply attenuation elsewhere in the chain. In general though, it's just a DAC.
It's nothing too bad. The only challenge is there is a decent amount of smd work with fairly small pitch, which can take some practice. I recommend watching some youtube vids on smd soldering and make sure you have plenty of solder wick and flux on hand. There is no casework though if you buy the faceplates from AMB and use the recommended enclosure.
Solder paste and a hot air station is a much easier method.
Also a lot faster but not exactly cheap, especially if you're only going to use it for one project.
yes go for it. y-1 was my 1st experience with smd components. it's challenging, but worth it for the long run. if you mess up ur pcm2706/7 pm me I got a buncha spares
I read the website about the volume control issue. I am planning to buy Denon D2000 soon but right now even my audioengine A5 seems to get way too loud a volume. i cant control volume via windows because windows doesnt touch the audio going into the gamma 2. I CAN control volume through fubar, but for example, if I'm using stumbleupon on firefox and getting a bunch of random videos from random flash video websites, I would have to constantly switch the volume to lower in the flash video itself.
The A5's are amplified but need to be set to a certain low volume otherwise speaker imbalance occurs. Essentially, I need to control the volume AFTER the gamma2 and BEFORE the speakers or headphones.
After reading, I'm seeing that simply using a volume pot or inline stereo volume control completely screws up the frequency response because of the varied impedence. It seems that a heapdhone amp is the only way to go to control volume.
Knowing this prior info, is the Fiio E5 a worthwhile purchase for the denon d2000 along with being a volume control for the A5's? Or should I save up more and use something like Fiio E7?
I am eventually going to build the Mini3 as my main portable amp and probably the X1 upgrade for it also, but thats only once I save up enough money. Until then, will Fiio E5 do or is it of such low quality that I might as well not bother? or worse, will the amped output screw with the input of my A5's?
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