I haven't been able to do it, sorry. I think I'll just have to put up with a physically larger player in order to have more storage space along with good navigation features.

Some of my earlier comments on square waves might be misguided -- check out this link http://www.innerfidelity.com/content/presto-change-o-measurement-transformations-page-2 Apparently, square waves response can be predicted pretty accurately just based on frequency response. I had thought it...

I'm not sure if you can get them at Best Buy, but the V Moda M 80 is a great headphone in that price range. If you wait around a while, you can find a really good price for them on eBay. I listen to rock and metal on them all the time, and the bass is very good. 

Could somebody quantify the extent to which the redwood and the bamboo are prone to cracking? Like what percentage of redwood owners experience cracking, vs what percentage of bamboo owners? Also, is the bamboo significantly lighter weight?

Ah, that makes sense, I think.

I have a Sansa Fuze with 40 GB storage, and I'm aware that other digital players exist. It's not a matter of the price. It's just that I really like the user interface software and form factor of the iPod Nano 3rd gen. (and yes, I have tried Rockbox) But I don't know the first thing about...

What you said about amplifying noise twice doesn't really make sense. What matter should be the degree to which the noise is amplified, not the number of times it is amplified.

Why does daisy chaining amplifiers produce noise?     The amazon reviewer whom I linked (just now I changed the link in my original post, original link pointed to the wrong place) claims that using an LOD does not actually bypass the iPod amp. I guess he is just flat out wrong. I looked at...

So, a lot of people on head-fi seem to say that plugging an amp in through a line-out dock of an iPod/iPhone will give better results than using the headphone out. Is there any scientific basis for this claim ? In what way is the signal processed differently?   Amazon reviewer SRH thinks...

Is there any way to mod the 3rd generation iPod nano so as to install additional storage capacity?  Obviously, Apple intends that this can't be done, but it seems like it would be pretty straightforward to just crack it open and replace the memory chip with a higher-capacity one.

  So, in order to hit its maximum rated wattage output, does an amp have to be set to the highest gain level?   For instance, suppose we calculated, with calculations similar to the ones a few posts up, that a particular amp with a particular headphone will start clipping at 110 dB. The...

Is there a difference between boosting the gain vs just turning up the volume setting on the amp, in terms of what happens physically?

Are there frequency response graphs for amps posted anywhere?   And are you saying that if the output voltage or output current is too high it can lead to trouble? How?

I like many of the features of the E17 amp -- digital control, and EQ for bass and treble. The reason why I like the EQ should be obvious -- more control over the sound of my music. I like the digital control because it makes it harder to accidentally turn the volume way up while the thing is in...

@jcx I see, so the same equations should work for calculating the power output of any amp at a given resistance, if two values are already given to allow us to solve two simultaneous equations. I was confused because you mentioned the op amp specs in the same post where you first gave the...

Oops, that was an accident on my part. How do I request that an admin move it?

I like many of the features of the E17 amp -- digital control, and EQ for bass and treble. The reason why I like the EQ should be obvious -- more control over the sound of my music. I like the digital control because it makes it harder to accidentally turn the volume way up while the thing is in...

Okay, I understand how you did the calculations. Am I correct that the equation  V_16 = Vsource * ( 16 / (16 + Rseries) ) comes from the op amp specifications? How did you look up these specifications?

Proton, thanks for the useful links and info. One of your links, http://sound.westhost.com/amp-sound.htm, explains that solid-state amps generally have output impedance below 1 ohm, so the output impedance should not be a worry when evaluating Fiio amps. The low output impedance allows an amp to...

To answer my previous question about where the decibel measurement takes place, I talked to an engineer (but not one specializing in audio) and he guessed that it takes place in the front of the metal part where the sound enters the meter.

Thanks

NA Blur said:       So, let's take these ideas to their logical extreme. Consider the $20 Fiio E1, which is powered directly from an iPod as its power source.    Tech specs here: http://www.fiio.com.cn/product/index.aspx?ID=14&MenuID=020301   Question: Should the E1 drive the...

How does one hook an LCD2 into a portable amp? The LCD2s that I tried at a recent meet all had the big 1/4" plugs that are too big to plug directly into a portable amp. Is the stock LCD2 plug convertible to a thinner plug? Or do you have to get some sort of converter hardware, and if so, where...

Another point to keep in mind is that the authors only used one minute of jazz as a test track; this would not be enough variety of music to fully test the headphones. Indeed, the piece used (Glenn Miller, "In The Mood") does not have much deep bass, which might be one of the most difficult...

I think you are not interpreting these papers correctly. First of all, the author does not say what headphones were used. This makes it very difficult to draw accurate conclusions. For all we know, he was simulating one $20 headphone with another $20 headphone. Somehow, I doubt they were...