Kagelou
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Same. Will the E15 be out in the Summer, Fall, or Winter?
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.
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.
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)
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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.
So basically, E15 > E7/E9 combo right? Although it does cost around $100 more
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?
http://www.wolfsonmicro.com/products/dacs/WM8740/
Most importantly:
- Sampling frequency : 8kHz - 192kHz
- Input data word : 16 to 24-bit
See also: http://focus.ti.com/docs/prod/folders/print/pcm2706.html
- 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.