Thanks! Will do.

No new cable yet - there are some good ones out there. Many moons ago, I looked for SMC cables and figured I'd just make my own. But they were surprisingly hard to find!

Mine are back in rotation after a long, long break. Forgot how awesome they can be (despite comfort issues and a cable that's slowly falling apart). These days I'm running Equalizer APO through windows and I used it to tune these to the Harmon Curve, with the exception that I run the bass a...

My O2 is going strong after, I don't know, 5 years or something? The original batteries are shot but it runs off the adapter just fine. Solid-state electronics usually are rock solid when and if they don't blow up early in their lives. I have AV receivers and other audio gadgets that are over a...

Search back into this thread for information on how to mod them in ways that can improve the sound somewhat at a reasonable cost. I use the velour pads and a little bit of "sorbathane" - 40 duro, which cleaned up the midrange "congestion" enough to make these even better. A little EQing - 50 hz...

How Much Power do you need? There are products from Fiio that may also work just fine and they are not that costly. IF you can go without portability, there are good options that are affordable. The Schiit Fulla is about $100, AMP+DAC, for example. Not SUPER powerful, but more than enough for...

That is a nice flat line. When you read the reviews of "high end" (e.g. ridiculously expensive amps), the distortion is often not the same across frequencies. Notably, the midrange-treble areas may be the area where you see rising distortion at power (though, typically, max power or high power...

What I mean is that the distribution of harmonic distortion and its so-called "masking" effects might be subjectively pleasing to some, or all listeners of an amp. Amp distortion might create some "character" that is subjectively pleasing. Solid state amps with low THD sometimes get there with a...

There was an article online recently suggesting that "2nd order distortion" makes good amps sound great - since apparently even-order distortion is pleasant and odd-order distortion is not. It would be fun to find a way to test that hypothesis on my own, but for the article a dedicated piece of...

Not to be defensive or anything, but are you sure the clipping your hear is from the O2 / ODAC and not the recording itself? The combo has always been revealing enough to make recorded clipping audible through a pair of sensitive headphones (like planars). Tons of my music, whether CD or not...

So I stand by what I said! It seems to be a known issue to them, and they are willing to deal with it. I'm glad JDS Labs is helping you fuss-free. This is why they rock!

Where are you getting the data for this interesting fact: "0.5% of the population with a USB drive that makes the revA go unstable?" Please let me know what the size of the population is, or how you in anyway know this and aren't making it up for the sake of questioning my diagnosis. No, I don't...

Sounds to me like you might actually have a dying / dead ODAC. I don't think that the first revision of the ODAC was super-reliable, mine died after a couple of years and had the same L-channel cut out, then a tap might bring it back etc. I'd wager that the amp itself is fine, but the ODAC is...

It doesn't make a ton of sense that the O2 would be better at powering dynamic, as opposed to planar drivers. I own both. They both sound great. The HE-400s are much improved on the O2, since they are the least efficient cans I've played with on it. I think planars might be a little harder to...

The reality is that most headphones require, at most, just a few mWs of power to CRANK. when 1 mW can yield 90-100 dB, frankly, the power requirement is too low to justify a dedicated amp. That is why, frankly, most of my midrange cans sound just fine on a modern smartphone. Its the higher...