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Super Mod for Wadia iTransport - Page 2

post #16 of 23
CrazyD seems a little touchy to me.

That being said, sorry dude but I still disagree with you. I'm using a top of the line Wadia DAC as well as a top of the line Esoteric DAC. And I flat out dont believe that yours can outperform mine. Not gonna happen. I've done plenty of research into the merits of both ways of doing digital. (my list of qualitative experience so far includes dCS, Weiss, Esoteric, Wadia, EMM Labs, Meridian, BAT, PS Audio, Zanden, Chord, Primare, Accuphase, Levinson, Music Fidelity, Krell, Oracle, and so on.)

And dont go gettin snippy with me acting like I dont know what I'm doing. I am absolutely aware of the real trade offs between single box units and seperates and I have yet to find a single box unit of anything that can outperform a very good seperate.

And I didnt just throw some battery packs together. It was a well thought out process. And guess what, I wouldnt bother mentioning it if it didnt work best.

Bottom line is that none of your mods is that complicated. I know a 16 year old kid who knows enough about electronics to do the very same part swapping that you do.
That isnt so say that your service isnt valuable. It certainly is to anyone who either doesnt have the knowledge or the desire to do it themselves.
I certainly do have the experience and knowledge and I have found that my way is perceivably better. And I chose to write about it in this forum.
You are free to sell your wares just as much. But you make a mistake in acting like I dont know what I am talking about.

Good luck with your business.
Everyone else with a desire to improve on their iTransport owes it to themselves to research all the options including Emperical Audio's very different solution.
post #17 of 23

I wonder if changing power adapter is effective.

I think that 170i's power adapter and connected cable seems to be not high-quality.
So,I wonder if replacing the cable and A/C adapter similar to the Headroom's or MF's PSU is reasonable.
Is there person who already tried?
Sincerely,
post #18 of 23
That seems like a good idea - is it as simple as finding a cable which fits the Headrooom DPS on one end the iTransport on the other? Or is that being oversimplistic?
post #19 of 23
You would need to verify that the DPS' output voltage and amperage were compatible with the 170i first. But then you're good to go.
post #20 of 23
All sniping aside, better caps, a better clock, and improved voltage regulation such as those offered by ASi , even after being supplied with better DC current, say from the CIAudio supply, should improve jitter input to any competent DAC. Not sure about the wood...

Hasn't anyone tried the CIAudio power supply?????????????????
post #21 of 23
Quote:
Originally Posted by audioengr View Post
Thanks for the good words.

I dont mod the itransport because the result would never be as good as my Pace-Car reclocker gives me. I decided that modding these cheap devices is just not the best way to spend resources or money for me or my customers. IMO, the thing to do is just use them (Sonos, Squeezebox, Duet, itransport, AirPort Express) strictly as data transport mechanisims and pick the one that has the human interface that you like best. Then add the Pace-Car reclocker to it to address the timing (jitter) and the result is a world-class digital source. No amount of mods to these devices can equal what's inside a Pace-Car. This puts the jitter control into a controlled environment where it can be effectively dealt with.

Steve N.
Empirical Audio
And that is exactly what I have decided to do for my AppleTV setup: put a Pace Car between it and my DAC. That way I get the user interface I want and the clean data for my DAC.
post #22 of 23
I'm not sure who may be reading this thread anymore. And I'm not one to be all into consumer protectionism either.
But in fiddling around with my iTransport some more I've come across some other dubious "mods" that Asitek is performing and claiming improvement.

The wood idea is just plain silly, IMO. But thats been highlighted already.
However, I have to strongly disagree with some of the other mods as well. I think Asitek aught to justify their reasoning in charging the customer for additions that I think most will agree truly will have nothing to do with improved performance.
Let me just state first that I am basing my opinion on what I can clearly see in the pictures provided at the Asitek website. I do not actually have one in my possession. But if you know what to look for the pictures provided are detailed enough.

1) They install two DEXA voltage regulators. One +5V and one +3.3V. The +5V certainly has merit because its what powers the USB conversion chip. But the +3.3V powers only the chips that involve the user interface and remote control functions. How exactly does lower noise in the power supply operating your remote control improve jitter performance?? Or anything else for that matter.

2) It goes without saying that the surface mount (SMD) capacitors associated with and surrounding this regulator could also be considered redundant.

3) There are two other SMD capacitors near the center of the circuit board that are also part of the power supply. However, that section of the power supply is feeding a circuit that isnt even there. Wadia has included a space for what was probably intended to be a USB output. Yet they never actually included this output. Therefore the SMD capacitors that are replaced in this area literally lead to nothing.

4) The same is true near the chip that does the actual USB to SPDIF conversion. This chip actually has an onboard DAC circuit and pins that can be used as an output towards headphones. And Wadia included circuit traces to a point on the board for a potential output to headphones. There, again, are two large SMD capacitors that are shown to be replaced by Asitek's upgrade and yet could not possibly effect any performance not associated with the headphone output jack that isnt even there.

All in all I counted 13 SMD capacitors that are replaced in the pictures that Asitek has on their website. And yet only 5 of them have any association with the actual USB to SPDIF conversion at all. They others are either supplying the user interface control or circuits that are not active. There are two voltage regulators replaced with only the one supplying the USB chip that could have any impact on performance.

With these things in mind I have to wonder if Asitek is competent enough to be analyzing circuits and providing modifications or if they are intentionally ripping off their customers. Either way I think it would be very prudent for anyone considering this modification to seek justification for these modifications.
post #23 of 23

Hi there,

 

Can you tell me where I can buy the power connector for the Wadia 170i?

 

I don't even know what that type of connector is called!

 

Thanks

 

Jim

 

jlnorie2@sbcglobal.net

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