[Sorensiim]

Quote:

Sounds like a guy I'd like I think I already stumbled over a blog like that ... was he by happenstance called TheOneWhoMustNotBeNamed ... the O2 story?

Yep, that's the guy!
 

 

[voon]

Wow .. there's even an automatic string replacement in place .. I didn't know it was that grave .. fine, let's not discuss him if it upsets the board .. I can follow that on my own
 
On topic: Has anyone else have had correspondence with iBasso?

 

[cooperpwc]

 
This Is Huge
 
(and you can try going back through thousands of my posts looking for the last time that I used large lettering on here...)
 
So here is my email to iBasso on the output impedance issue:
 

Hello,
Happy new year to everyone at iBasso!
I am very excited about the DX100 PAD. Like many people, I want to use this with high end custom IEMs. To get a proper frequency response and performance, this requires the DX100 have low output impedance. The ideal is >1. Anything greater than 2 starts to become worrisome.
Do you know what the output impedance will be?
Much thanks,

 
and this is their reply:
 
 

Hi,
Happy New Year.
The output impedance is less than 0.3ohm while frequency response is on 20~20K.
Sincerely
iBasso Audio

(emphasis added)
 
Okay, iBasso are taking this DAP very seriously. The game is on. Bring on the DX100!

 

 

[Sorensiim]

Quote:

 
This Is Huge
 
The output impedance is less than 0.3ohm while frequency response is on 20~20K.

 

THROWING MONEY AT THE SCREEN - IT DOES NOTHING!!!!?!?!?

Take my money Ibasso, take it! TAKE IT ALL!

 

[the wizard of oz]

Is it technically possible to have one very low impedance on the 1/8" output, and a different, much higher one on the 1/4 output? If they manage that, properly implemented and with a linear frequency response for both, this would be quite the "reference" DAP indeed!

 

[voon]

0.3 Ohm? By the 8x rule, that'd mean it can drive earphones with 2.4 Ohm and up properly .... out of curiosity, how many Ohms does a TF10 have? And: Is this all I need to know about the DX100 being able to drive the TF10 properly? I'm not very electronicy....

 

[cooperpwc]

Quote:

Is it technically possible to have one very low impedance on the 1/8" output, and a different, much higher one on the 1/4 output? If they manage that, properly implemented and with a linear frequency response for both, this would be quite the "reference" DAP indeed!

I don't think that this would add much value. Meier Audio used to have two jacks on their home amplifiers, one >1 ohm and one at the old German standard of 120 ohms. Jan doesn't bother anymore. Headphones aren't designed for the higher output impedance and it doesn't help SQ. I have heard of exactly one headphone of recent that some think benefit from high output impedance: the monstrous Beyer TP5. Really, how many people will be using that with the DX100?
 
The new standard is >1 ohm.  IBasso has pegged it.
 

 

[singh]

good , so does that mean that i postpone pico silm purchase ??
 
 

 

[uelover]

Quote:

good , so does that mean that i postpone pico silm purchase ??
 
 

No. You can shelve that off now.
 

 

[jamato8]

I can hear the engines revving and the see the tires getting reading to squeal . . . :^)   this should be fun . . 

 

[kostalex]

I wish it has Android and Wi-Fi to access my laptop FLAC library.
I wish it is on par with HM-801 SQ-wise. Then I will upgrade.
 

 

[Mython]

Personally, I doubt it will have Wi-Fi.
 
But iBasso will obviously only be building this DAP with a high-end DAC chip in order to beat current audiophile competitors such as HM-801 and Colorfly C4

 

[DigitalFreak]

Quote:

Personally, I doubt it will have Wi-Fi.
 
But iBasso will obviously only be building this DAP with a high-end DAC chip in order to beat current audiophile competitors such as HM-801 and Colorfly C4

If given the choice I'd say for go the wi fi as a means of keeping the price more affordable

 

[the wizard of oz]

Quote:

Personally, I doubt it will have Wi-Fi.
 
But iBasso will obviously only be building this DAP with a high-end DAC chip in order to beat current audiophile competitors such as HM-801 and Colorfly C4 Pro

 
Quote:

If they would listen to my advice, I'd say forget the Wi-Fi in order to keep it more affordable.

You guys must have missed this reference a few posts back: ES9018 DAC, 64GB on-board + microSDHC slot, Android OS & WiFi confirmed.
 
That said, I'd have preferred a non-Wi-Fi version too, not only for costs reasons.
 

 

[TiEx]

Quote:

0.3 Ohm? By the 8x rule, that'd mean it can drive earphones with 2.4 Ohm and up properly .... out of curiosity, how many Ohms does a TF10 have? And: Is this all I need to know about the DX100 being able to drive the TF10 properly? I'm not very electronicy....

Quote from laaudiofile.com:
[size=small]These earphones have an impedance rating of 32 ohms and our measurements seem to confirm this with an average of just over 30 ohms However, we measured a peak of 64.5 ohms at 1 kHz and a minimum of 6.7 ohms at 10kHz.[/size]
 

 
Quote from rinchoi.blogspot.com:
@ 100 Hz: 32 Ω (DC resistance)
@ 1 kHz: 60 Ω (resonant frequency? possibly due to the crossover network)
@ 10 kHz: 6 Ω (quite low. due to the multiple drivers coupled in parallel?)
 

 
It means around 32 in avarege with 6 Ohm in minimum and 64.5 Ohm in maximum.
 
With iBasso DX100 0.3Ohm impedance and 8X law. Even the 6 Ohm dip on the TF 10 wont be affected or maximum effect will be some kind of 0.5dB drop. That is very impressive btw.