[kkcc]

That's probably true. The issue with multi-BA drivers is the variation of impedance across the frequency range. In theory a single BA should present a more consistent load at all frequencies and therefore not have significant fluctuations to the power delivered (and therefore the volume at each frequency).

I went looking for impedance vs frequency graphs for the FAD Heaven IV but couldn't find any.

In theory, damping (the ability to precisely control the movement of the driver) should still be an issue with such mismatched impedance, but maybe the Heaven IV is well damped mechanically and doesn't rely on electrical damping.

I'd be very interested to hear some opinions from people with the AK100 and other high end devices with low OI because the Heavens are an interesting prospect at their price and reported performance

Got the AK-FAD Heaven IV special edition earlier but can't say I m impressed with it on AK100 (stock). For single BA I much prefer the pairing with Er4s.

 

[Gintaras]

i am afraid to repeat someone's else post but Gapless on AK100 does NOT work with mp3.
 
why iRiver applies sado-maso updates which give us wanted features only bit by bit and long time waiting.

 

[Nukeshock]

problem...i went to my local store to try out amps with optical in and plugged the optical cable to the amp and to the optical out on the ak100...then the ak100 displayed two options i forgot what they said but pressing the one at the bottom made the player unusable with a text saying music cannot be controlled when connected to the optical blah blah blah...and when i choose the other option it displays everything per-normal but no sound comes out of the amp !?!?!?!
 
only works when i put the optical cable in the headphone out jack !!! then it works !!! is it still double amping like this ????if so then screw this im getting a T1 !!!

 

[Loquah]

problem...i went to my local store to try out amps with optical in and plugged the optical cable to the amp and to the optical out on the ak100...then the ak100 displayed two options i forgot what they said but pressing the one at the bottom made the player unusable with a text saying music cannot be controlled when connected to the optical blah blah blah...and when i choose the other option it displays everything per-normal but no sound comes out of the amp !?!?!?!

 
only works when i put the optical cable in the headphone out jack !!! then it works !!! is it still double amping like this ????if so then screw this im getting a T1 !!!

No, not double amping. The right-hand socket (ie closer to the lock button) is optical IN. The left socket is headphone out (amped) and optical OUT (unamped as a digital feed). Using the optical out provides an "untouched" signal to your portable DAC/amp and turns the AK100 into just a transport.

 

[foolbb]

You may try to download high bit rate file from the "Test bench HD audio files" at http://www.2l.no/

 

[jamato8]

Haven't kept up here much. So there is the new firmware for USB use. Did iRiver ever address the gapless performance?

 

[Loquah]

Quote:

Haven't kept up here much. So there is the new firmware for USB use. Did iRiver ever address the gapless performance?

Yes. v2.10 handles USB DAC (although I am having troubles with noise during track changes etc. using WASAPI). Can't comment on gapless as I don't use it.

 

[seeteeyou]

.

 

[Mimouille]

Quote:

Did anyone try this PWAK100-S mod for HK$1,800 / 233 bucks yet?

http://hk.f1.page.auctions.yahoo.com/hk/auction/b26552864

Pretty much the same WM8740 -> WM8741 swap etc.

The name is not very attractive. Sounds like something Donald Duck or Elmer would say.

 

[musicheaven]

The name is not very attractive. Sounds like something Donald Duck or Elmer would say.

Hey maybe this mod will quack when burning in.

 

[zekioflo]

Do not understand any words for this mod

 

[Mimouille]

Hey maybe this mod will quack when burning in.

But does it read FWAC or only MPFWEE?

 

[Loquah]

Sorry to change topic mid-joke, but has anyone else experienced issues with AK100 as a USB DAC with WASAPI?

Now that I'm reading my own post, I'm not entirely sure that it's NOT a part of the names joke!

 

[charlie0904]

Do not understand any words for this mod

it says after changing dac chip. vol control will not work. no dsd support. must use with an external amp.

 

[musicheaven]

But does it read FWAC or only MPFWEE?

it says after changing dac chip. vol control will not work. no dsd support. must use with an external amp.

Sounds like a hacked RWAK100-S?
Does he guarantee the mod like Vinnie does?