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The New iRiver AK100: A High-End DAP - Page 460

post #6886 of 8825

Hi, been reading quite a few of the pages from this thread but cannot find a direct answer to my questions so here goes:

1) I'd like to use the AK-100 with my existing IEMs from Phonak - the PFE232. Anyone see any issues with these as I'm a bit concerned about the comments related to the AK's impedance output

2) Has Gapless playback now been fixed in the latest firmware?

 

thanks for your help

post #6887 of 8825
Quote:
Originally Posted by justin b View Post

Thanks for that. I thought the chip upgrade was in each of them, and should have gone back and read his site again.
That is tje key issue. He cannot upgrade the dac chip in the ak100 or ak120 AND keep it as a standalone player, because Vinnie would need someone to adapt the firmware.
post #6888 of 8825
Quote:
Originally Posted by andygiddings View Post

Hi, been reading quite a few of the pages from this thread but cannot find a direct answer to my questions so here goes:
1) I'd like to use the AK-100 with my existing IEMs from Phonak - the PFE232. Anyone see any issues with these as I'm a bit concerned about the comments related to the AK's impedance output
2) Has Gapless playback now been fixed in the latest firmware?

thanks for your help

Yes to gapless. Someone else will have to answer the phonak question.
post #6889 of 8825
Quote:
Originally Posted by andygiddings View Post

Hi, been reading quite a few of the pages from this thread but cannot find a direct answer to my questions so here goes:

1) I'd like to use the AK-100 with my existing IEMs from Phonak - the PFE232. Anyone see any issues with these as I'm a bit concerned about the comments related to the AK's impedance output

2) Has Gapless playback now been fixed in the latest firmware?

 

thanks for your help


I can't speak to the AK100, but I have the RWAK100.  Kind of forgot about The PFE232 and gave it a try. It seems to pair well with the RWAK100, at least with the default reference filters and Comply tips.

post #6890 of 8825
Quote:
Originally Posted by Mimouille View Post


That is tje key issue. He cannot upgrade the dac chip in the ak100 or ak120 AND keep it as a standalone player, because Vinnie would need someone to adapt the firmware.

 

Correct:

 

 

 

Quote:  http://redwineaudio.com/mods/rwak120-s

RWAK120-S Q & A

Q: Can you preserve the headphone output stage with the RWAK120-S mod?
A: Unfortunately, no. Without a custom firmware update that is designed for the WM8741 and allows it to both run in software mode AND use its minimal phase digital filter, this is not possible. We therefore make the best of the situation by dedicating the RWAK120-S modification to those who exclusively use it as a source component to feed an external headphone amplifier (required) with the best possible, true-line out signal.

*** The same is true for the RWAK100-S

 

Later this week we'll start shipping the RWAK120-S modded players! 

cool.gif

 

Next week we should finally have pics uploaded of the RWAK100-S and RWAK120-S on the website.

 

Thanks for all your feedback!

 

Vinnie

Reply
post #6891 of 8825
Quote:
Originally Posted by andygiddings View Post

Hi, been reading quite a few of the pages from this thread but cannot find a direct answer to my questions so here goes:

1) I'd like to use the AK-100 with my existing IEMs from Phonak - the PFE232. Anyone see any issues with these as I'm a bit concerned about the comments related to the AK's impedance output

2) Has Gapless playback now been fixed in the latest firmware?

 

thanks for your help

 

I haven't heard the PFE232 with the AK100, but I did a lot of testing and research with multiple IEMs when I had the stock AK100 so I am confident in the following.

 

The PFE232 is nominally a 40ohm earphone, but has a steep drop down starting at 2000Hz to a low of 15ohm (at 9000Hz) http://www.innerfidelity.com/content/phonak-audeo-pfe-232-measurements

 

What this means with the AK100 is that the response will be true to the earphone design from the bottom end up to about 2000Hz and will then have a 4dB dip starting at 2000Hz, and bottoming out at 9000Hz, before coming back up nearly to normal by 12kHz (the top of the 232's range).

 

Given that the PFE232 has a spike at around 8-9kHz, the interaction with the AK100 should actually smooth out this peak and may make the earphone sound more linear, but it might also take away sparkle and air from the sound signature depending on your tastes, etc.

 

My guess from all this is that the PFE232 will sound warmer (darker, smoother, etc.) when paired with the AK100.

 

Hope this helps (and proves accurate) 


Edited by Loquah - 8/12/13 at 4:18pm
post #6892 of 8825

Thanks all for your comments, esp Loquah for the detailed response. I think I'm going to go ahead and try out the AK and PFE combo and will give feedback once I've auditioned the setup

post #6893 of 8825
Quote:
Originally Posted by andygiddings View Post

Thanks all for your comments, esp Loquah for the detailed response. I think I'm going to go ahead and try out the AK and PFE combo and will give feedback once I've auditioned the setup

 

Please do let us know if the experience matches the theory - it's always an interesting experiment!

post #6894 of 8825

I have read this entire thread but I am not sure if I ever saw a definitive answer. 

 

Has anyone tried a 128GB SDXC (Class 10) with the AK100? I am thinking that if it is formatted to FAT32, it might work.

 

(If so, I may be interested in getting RWAK100S from Vinnie. My portable rig is screaming for a better source.)

post #6895 of 8825
Quote:
Originally Posted by cooperpwc View Post

I have read this entire thread but I am not sure if I ever saw a definitive answer. 

 

Has anyone tried a 128GB SDXC (Class 10) with the AK100? I am thinking that if it is formatted to FAT32, it might work.

 

(If so, I may be interested in getting RWAK100S from Vinnie. My portable rig is screaming for a better source.)

It only accepts microSDXC, and they are not available yet in anything above 64GB. There are adaptors that could theoretically be used, but that would not be a good portable solution even if it did work.

post #6896 of 8825

Someone tried using an adaptor with 128gb SD card. but I cant remember which page is is on now.
 

post #6897 of 8825
Quote:
Originally Posted by Loquah View Post

 

Please do let us know if the experience matches the theory - it's always an interesting experiment!

Hi, so now have the AK and some HD tracks, impressed with the sound through the PFE 232 and, at this early stage, would say the sound quality is only slightly warmer compared to other sources I've used, if at all (as was expected by Loquah). I'm now hearing instruments in classical pieces that were hidden before and the level of detail in some of the HD tracks is excellent. So far very pleased with the investment

post #6898 of 8825
Quote:
Originally Posted by andygiddings View Post

Hi, so now have the AK and some HD tracks, impressed with the sound through the PFE 232 and, at this early stage, would say the sound quality is only slightly warmer compared to other sources I've used, if at all (as was expected by Loquah). I'm now hearing instruments in classical pieces that were hidden before and the level of detail in some of the HD tracks is excellent. So far very pleased with the investment

 

That's the beauty of the AK100 - all the extra detail compared to lower tier DAPs.

 

Glad to hear it hasn't completely skewed the sound. Are the PFE 232s a little on the bright side to start with? 

post #6899 of 8825

 Why the f*** does MQS albums cost so much? Groovers(Iriver's music store) are charging me about $30usd for an album.

post #6900 of 8825
Quote:
Originally Posted by Achmedisdead View Post

It only accepts microSDXC, and they are not available yet in anything above 64GB. There are adaptors that could theoretically be used, but that would not be a good portable solution even if it did work.

 

Ah! Thanks. So my 128 GB SDXC is not going to work.

 

Micro are easy to lose but convenient I suppose.

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