12 year old thread resurrection? This is a record for me. If you want to try very large film capacitors why not go for Solen? They are polypropylene and are made for this purpose (audio). No point gong for polyester if you're set on using a physically huge capacitor already.

Yes, that is the post I was referring to. I wasn't able to find anything else on the internet.   THD is much harder to measure, never mind at the performance level that a sound card or a DAC is capable of. But there is a possibility that your mismatch was caused by something else. RMAA will...

Digging an old thread but that's exactly what I just found for myself and googling led me to this thread. I mean, RMAA seems to subtract 6dB from channel crosstalk results (making it look much better than it is). I confirmed this on 2 different devices (one amp and the other dac+amp) and using...

I have installed the bootloader from the exact same page last week and I just installed the 3.3 version. It still behaves like before. I suspect my CF adapter does not work well with my CF card or the CF card itself is not compatible. I'll try to buy another adapter, at least they are cheap.  ...

Thanks for the suggestions. I already flashed a new bootloader (7.4 pre 1 - doesn't seem to be anything newer and this one is a hack as it is) - and the nightly build of rockbox. I am not sure what do you mean by flashing the ram/rom? Is there an option in the menu to do so? Btw you can't really...

I just installed 64GB Kingston 266X CF card in my iPH-120 and I'm having a strange problem. Any song plays for 10-60 seconds and then skips to the next song. Every time.  I can't find any reports of similar problems, and I tried latest bootloader and rockbox, no change. Reformatted FAT32, copied...

How much difference you'll hear depends on how good is your single ended amp. Many don't have ideal channel separation. I am also planning to reterminate my T1 after I finish my balanced beta22.

Tesla T1 is really good. I am a bit unhappy with quality control - had to send mine for repair due to buzzing - but they look and sound like they are worth their high price. Super comfortable too. Their sheer speed is better than anything I listened to. Piano and guitar sound amazing because of...

You pretty much need to design a circuit board for that, though. You also have to order the chip from the supplier. While you could just hack the analog circuit as well as buy parts in your local electronics store. And it is probably cheaper, too. I agree though, if I was designing something I'd...

I was asked to repost the image since the original has disappeared. I don't seem to be able to attach anything to either old or new post even though it's only 5k so here's a link.   http://www.aoselectronics.com/gfx/web/lobatt2.png

I think I got them from EBay last year.

Headroom diagram is spot-on. It's obvious you need two wires per channel. It's not possible to have "balanced" headphones with only three wires, not you can connect together any of those 4 wires (and neither you can involve ground with any of them). To do so will at least make the amp not work...

I use Audio Technica ATH-900 - I also work as a programmer and want to drown out the talking, though it's not as bad as your environment. I found they work very well in this regard without compromising sound quality too much. Extremely comfortable. I also have HD-25 II and find those great for...

It really is insanely difficult to remove the plastic cup. I actually damaged my pair trying to take them off (broke the little plastic bridge on top, no biggie but annoying). Even opening an Acer Aspire One is way easier than this.

Quote: AOS: I hear what you're saying but I've never been instructed to use data sets when matching transistors. the single scalar number seems to be what you use, since the test conditions are the same (temperature and voltage under test). That's because if you match two transistors...

Quote: got out my DMM and turned to the HFE setting and measured the gains of each of the transistors. wrote down the single number and sorted them by that. then picked pairs that were close to each other as well as weeding out the too-high and too-low ones from the pack. THAT is what I...

I actually get what you're asking, having one in my hands right now and having looked carefully at the picture. But I have no idea what to suggest other than the obvious - press it down. I can't see much on mine and am not about to rip it out without knowing what I'm doing. My suggestion is...

Get a HD-650 replacement cable from Sennheiser first, as it will cost you only $15 or so plus shipping. That is, if you manage to get through to Sennheiser Canada and get lucky enough that they don't "forget" your order. I had to call about 5 times over the course of 2 weeks until they...

702 is exactly the same - I haven't seen 701 but your pictures and description match exactly what I have. The question is, what exactly is this material and where can I buy it?

That's interesting... I have regular ATH-A900 which I bought personally in Japan and use at work with great success. I had no idea Ti version even existed. Might be worth investigating if I end up going to Japan again. Then again if they cost twice as much, maybe I should just look into getting...

No poll privileges, and not ordering either. I will wait for a (massive) price drop on HD-800 and glowing reviews from ordinary non-biased people before even contemplating springing cash for that ugly thing. 2010 at the earliest. As for Grado, I have zero interest in their newest head torturing...

Well, regardless of heated discussions, I bought K702 two-three weeks ago and started burning it in. It must have been very little used by the two previous owners as it looked brand new - and sounded rather tonally unbalanced (unnatural). After more than 10 days of burn-in it suddenly started...

For office use I don't think you can beat Audio Technica ATH-A900 under $200. Assuming you are able to get them for that price - I got mine in Tokyo for CDN $170. I haven't found any headphone that is more comfortable, isolation is great (can't hear anything in the office), build quality above...

When I first got my HD-580, this site didn't exist yet. I didn't have a headamp and I thought they were terrible out of a receiver headphone jack. Didn't use them for over half a year until I managed to build my first headphone amp. However, I tried them in more modern times out of iPod jacks...

I only sold Etymotics... there was no point in keeping it since I knew I won't be listening to them, ever - they made me sick. Otherwise, I keep all headphones around. But that's because I almost always buy used, when they're not "hot" so it's rarely worth selling them. That doesn't mean they...