[BenF]

This may be a dumb question but do the batteries in amps drain when the amp is left on with no music playing through it?

 
Yes, although slower

 

[StanD]

   
My Beyer DT880 are warmer sounding than my Q701.  (in my opinion! subject to revision!)
The ear pads are quite fuzzy, so I consider them the warm and fuzzy headphone. (in my opinion! subject to revision!)
 
My Avatar is explained in my personal profile as is my opinion on Monica Bellucci.

But does Monica Bellucci love EE's that love little polar bears?

 

[Evshrug]

How about "cuddly"?

I adore cuddly! But I don't think cuddly, warm, or cold are good sound descriptors, what's worse is that people use them in a VERY general sense.

That explains your Avatar.
Can a HP be warm and fuzzy at the same time?

This may be a dumb question but do the batteries in amps drain when the amp is left on with no music playing through it?

The very fact that you are seeking knowledge means it isn't a stupid question.

Answer: yes, the batteries drain when the amp is turned on without music playing or connected to an audio source. In fact, at a very slow rate, all rechargeable batteries drain over time even when devices are turned off (like my AA rechargeables, they drain over a couple weeks just sitting on the counter).

 

[iSennheiser]

I am really a newbie and do not understand the debate above... Sensitivity vs impedence, I know it a little, but I have a question, does battery level of portable amp affect the sound quality? i know it when the sound changes when my amp is about to die.

 

[StanD]

I am really a newbie and do not understand the debate above... Sensitivity vs impedence, I know it a little, but I have a question, does battery level of portable amp affect the sound quality? i know it when the sound changes when my amp is about to die.

Only when the level goes below what the amp is designed for, unless it is improperly designed. Batteries have a discharge curve and the design should be able to account for that. Many components, like opamps have a generous operating range but when the battery goes, generally it does so quickly and it's internal resistance goes up.
Take a peek at curves and info at the below links:
http://www.powerstream.com/AA-tests.htm
http://www.ti.com/lit/an/snva533/snva533.pdf

 

[Chris J]

I am really a newbie............ I have a question, does battery level of portable amp affect the sound quality? i know it when the sound changes when my amp is about to die.

Practically speaking, no.
I certainly can't hear the difference between 80% of battery charge remaining and 20% remaining.

Anybody else?

 

[iSennheiser]

Only when the level goes below what the amp is designed for, unless it is improperly designed. Batteries have a discharge curve and the design should be able to account for that. Many components, like opamps have a generous operating range but when the battery goes, generally it does so quickly and it's internal resistance goes up.
Take a peek at curves and info at the below links:
http://www.powerstream.com/AA-tests.htm
http://www.ti.com/lit/an/snva533/snva533.pdf

You're hardcore, thx appreciated!

 

[StanD]

Practically speaking, no.
I certainly can't hear the difference between 80% of battery charge remaining and 20% remaining.

Anybody else?

Sounds good to me. The actual voltage difference between what is 80% and 20% battery remaining shouldn't be much and any affect it has on Vp-p should be too slight to notice, unless you're using a volt meter - lol.

 

[Chris J]

  But does Monica Bellucci love EE's that love little polar bears?

 
Probably not.
 
Oh well.
One more thing on my bucket list that will never happen.

 

[StanD]

   
Probably not.
 
Oh well.
One more thing on my bucket list that will never happen.

You give up too easily. 

 

[xianrenzhang]

think so, I think on the E11, the settings are 2.5x and 4.5x, a 5.1 dB difference.  Something lower than 2.5x would help IEM users.  

 

[BenF]

I'm confused by bass boost description of the FIIO website. It says 5dB at 100Hz, but the graph on the same page tells a different story:

Can you please update the graph with v2 measurements?

 

[jazzman7]

  I'm confused by bass boost description of the FIIO website. It says 5dB at 100Hz, but the graph on the same page tells a different story:

Can you please update the graph with v2 measurements?

That is definitely the original v1 version.  Here's a graph of the production version (quoted from a past post):
 
http://www.jensign.com/FiiOE17/BodePlots/
 
The bass boost starts in the midrange, peaks at 50Hz and rolls off below that. 

 

[BenF]

  That is definitely the original v1 version.  Here's a graph of the production version (quoted from a past post):
 
http://www.jensign.com/FiiOE17/BodePlots/
 
The bass boost starts in the midrange, peaks at 50Hz and rolls off below that. 

 
Peak at 50hz was supposed to be the V1...

 

[Hal Rockwell]

V1 peaks at 20Hz