fiio e17 speculations?
Apr 21, 2011 at 8:23 PM Post #76 of 352
Same. Will the E15 be out in the Summer, Fall, or Winter?
 
Apr 23, 2011 at 2:31 AM Post #78 of 352
I believe it's been said to be an internal E7/E9 all in one. The DAC portion will sound better because it doesn't have to go through the USB stuff, or whatnot. So it will yield better SQ than the E7/E9 together.
 
 
Apr 24, 2011 at 12:26 PM Post #81 of 352
This is what I wanted to hear. I was wondering if it would be better to just buy the E7/E9 combo or the E15 to power my future K701. But then again, I guess we'll have to see how good the E15 synergizes with the K701..?
 
Quote:
I believe it's been said to be an internal E7/E9 all in one. The DAC portion will sound better because it doesn't have to go through the USB stuff, or whatnot. So it will yield better SQ than the E7/E9 together.
 



 
 
Apr 24, 2011 at 10:09 PM Post #82 of 352
 

Quote:
I believe it's been said to be an internal E7/E9 all in one. The DAC portion will sound better because it doesn't have to go through the USB stuff, or whatnot. So it will yield better SQ than the E7/E9 together.

 



Quote:
This is what I wanted to hear. I was wondering if it would be better to just buy the E7/E9 combo or the E15 to power my future K701. But then again, I guess we'll have to see how good the E15 synergizes with the K701..?
 

 
Actually, E15 is not going to be an internal E7/E9 combo. Few pages back, Feiao gave a short overview of his future product lines:
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

 in our roadmap, E7+E9 is different kind of product with E17, as you can have a low at below, the sequency is depend on price from low to high
 

1, E7:         Portable USB DAC+AMP,  USB 16BIT/48K                                                       US$100 (reference) 

2, E9:         Desktop AMP                                                                                                 US$120 (reference) 

3, E17:       Portable USB DAC+AMP,   USB 24BIT/96K, Optical/Coaxial 24BIT/128K            US$190 (reference) 

4, E7+E9: COMBO                                                                                                         US$190 (reference) 

5, E15:        Desktop USB DAC+AMP,  USB 24BIT/96K, Optical/Coaxial 24BIT/128K            US$290  (reference)

6, E17+E9:  COMBO                                                                                                        US$290  (reference)

 

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Unlike the E7, the DAC that will be on the E15 will be able to do 24/96, which makes it closer to the DAC capabilities of the future E17. We can also see this implied when Feiao says in the few posts further back, when he says Fiio plans to develop E15 before E17 to save R&D cost.

 
Apr 24, 2011 at 10:38 PM Post #83 of 352
So basically, E15 > E7/E9 combo right? Although it does cost around $100 more
 
Quote:
 

 
Actually, E15 is not going to be an internal E7/E9 combo. Few pages back, Feiao gave a short overview of his future product lines:
 in our roadmap, E7+E9 is different kind of product with E17, as you can have a low at below, the sequency is depend on price from low to high
 

1, E7:         Portable USB DAC+AMP,  USB 16BIT/48K                                                       US$100 (reference) 

2, E9:         Desktop AMP                                                                                                 US$120 (reference) 

3, E17:       Portable USB DAC+AMP,   USB 24BIT/96K, Optical/Coaxial 24BIT/128K            US$190 (reference) 

4, E7+E9: COMBO                                                                                                         US$190 (reference) 

5, E15:        Desktop USB DAC+AMP,  USB 24BIT/96K, Optical/Coaxial 24BIT/128K            US$290  (reference)

6, E17+E9:  COMBO                                                                                                        US$290  (reference)

 

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Unlike the E7, the DAC that will be on the E15 will be able to do 24/96, which makes it closer to the DAC capabilities of the future E17. We can also see this implied when Feiao says in the few posts further back, when he says Fiio plans to develop E15 before E17 to save R&D cost.



 
 
Apr 24, 2011 at 10:58 PM Post #84 of 352
So basically, E15 > E7/E9 combo right? Although it does cost around $100 more
 


 


But it also has more inputs and takes higher bit depths and sample rates, which may or may not be important to you.
 
Apr 24, 2011 at 11:04 PM Post #85 of 352
if i remember correctly, from pages back, they also mentioned that E15>E17/E9 besides E17/E9s flexibility. E15 should have a more powered DAC.
 
going to choose between getting e15 or NFB12 >.< i think nfb12 supports up to 25/194KHz while E17 might have 24/96KHz. 
 
 
 
Apr 25, 2011 at 9:49 AM Post #86 of 352
Quote:
Unlike the E7, the DAC that will be on the E15 will be able to do 24/96, which makes it closer to the DAC capabilities of the future E17. We can also see this implied when Feiao says in the few posts further back, when he says Fiio plans to develop E15 before E17 to save R&D cost.

The DAC in the E7 is perfectly capable of 24/96, it's just limited by the USB receiver chip. So yes, the E15 could just be an E7 and E9 combined and still do 24/96 through coax and optical, though still not through USB. HD music is possible over USB, but it generally requires specific chips and drivers that I don't think FiiO want to get into developing.
You know how the X3 ought to sound better than the E7 because it's bypassing the USB decoder? Same principle.
 
Oh, and how did I miss this thread?
 
 
Apr 25, 2011 at 10:13 AM Post #87 of 352

 
Quote:
The DAC in the E7 is perfectly capable of 24/96, it's just limited by the USB receiver chip. So yes, the E15 could just be an E7 and E9 combined and still do 24/96 through coax and optical, though still not through USB. HD music is possible over USB, but it generally requires specific chips and drivers that I don't think FiiO want to get into developing.
You know how the X3 ought to sound better than the E7 because it's bypassing the USB decoder? Same principle.
 
Oh, and how did I miss this thread?
 

 
Quote:
 
 
1, E7:         Portable USB DAC+AMP,  USB 16BIT/48K                                                       US$100 (reference) 

2, E9:         Desktop AMP                                                                                                 US$120 (reference) 

3, E17:       Portable USB DAC+AMP,   USB 24BIT/96K, Optical/Coaxial 24BIT/128K            US$190 (reference) 

4, E7+E9: COMBO                                                                                                         US$190 (reference) 

5, E15:        Desktop USB DAC+AMP,  USB 24BIT/96K, Optical/Coaxial 24BIT/128K            US$290  (reference)

6, E17+E9:  COMBO                                                                                                        US$290  (reference)

 

I don't know why I have to quote the same thing twice for someone not so observant. but, You're wrong.  Read more carefully before you say someone's wrong..

 
Apr 25, 2011 at 11:32 AM Post #88 of 352
http://www.wolfsonmicro.com/products/dacs/WM8740/
 
Most importantly:
  1. Sampling frequency : 8kHz - 192kHz
  2. Input data word : 16 to 24-bit
 
See also: http://focus.ti.com/docs/prod/folders/print/pcm2706.html
  1. Sampling Rate: 32, 44.1, 48 kHz
 
The E7 alone can not do 24/96, because it is only interfaced with through the above USB DAC chip. The main Wolfson DAC chip inside it, however, can. Were it that the E7 and E9 were put together so that the PCM2706 was bypassed and the input was 24/96 (or 24/192, though then there may be stability issues) through S/PDIF or I2S, then the chip would be able to decode those signals into analogue audio. My point was that the E15 could utilise the exact same components as the E7/E9 combo, but could have optical and coax inputs that would bypass the USB chip and so reach higher sampling rates and word counts.
 
tl;dr - the bits are all there for hi-res but the USB screws it over.
 
Apr 25, 2011 at 12:13 PM Post #89 of 352


Quote:
http://www.wolfsonmicro.com/products/dacs/WM8740/
 
Most importantly:
  1. Sampling frequency : 8kHz - 192kHz
  2. Input data word : 16 to 24-bit
 
See also: http://focus.ti.com/docs/prod/folders/print/pcm2706.html
  1. Sampling Rate: 32, 44.1, 48 kHz
 
The E7 alone can not do 24/96, because it is only interfaced with through the above USB DAC chip. The main Wolfson DAC chip inside it, however, can. Were it that the E7 and E9 were put together so that the PCM2706 was bypassed and the input was 24/96 (or 24/192, though then there may be stability issues) through S/PDIF or I2S, then the chip would be able to decode those signals into analogue audio. My point was that the E15 could utilise the exact same components as the E7/E9 combo, but could have optical and coax inputs that would bypass the USB chip and so reach higher sampling rates and word counts.
 
tl;dr - the bits are all there for hi-res but the USB screws it over.


The DAC chip in the E7 might be capable of 24/96, but this does not change the fact that E7 as a device CANNOT do 24/96 with usb. Three posts above, what I meant by "DAC," was the DAC as a device inside the E15 combo, not the DAC chip (which I suppose was what led you to talk about WM8740's capabilities). Also, the DAC chip that will be used will be either AD1955 or PCM1798. So even in the technical sense(assuming E7 and E9 were implemented differently than they already are so that the usb receiver or whatever can be bypassed), E7 and E9 combined will NOT be the same as E15, unless you assume that any DAC that can do same bitrate/sampling frequency are considered the same. 

I don't want to go into the technicalities of how chips are implemented and thus limitations are created and et cetera. The point I'm trying to make, is that from the configurations Fiio used in their products, and in a consumer's point of view, E7 is NOT able to do 24/94 with USB, nor does it have coaxial or optical input available, while E15 CAN do 24/96 with USB, and 24/128 with optical/coaxial.
 
 
Apr 25, 2011 at 12:21 PM Post #90 of 352
I never said that the E7 unit could do anything higher than 16/48, if I implied anything otherwise I apologise. I also said that the E15 could use the same components as the E7/E9 and still achieve 24/96 over coax, not that it will or should, or that FiiO would choose to do anything like that. Anyway...
 

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