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Amp for iPhone and maybe computer - Page 2

post #16 of 37
12/6/08 at 4:29pm
Thread Starter 
So I do notice when my iPhone buzzes, and it does buzz a lot less then the previous model. However, if I cannot hear it buzzing, will it still be affecting the amp?

By the ways, thanks for the warm welcome
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post #17 of 37
12/6/08 at 8:00pm
This buzzing noise is not limited to the iPhone, but any GSM phone at all. The iPhone just seems to transmit data more often, so it's more obnoxious. I am with a CDMA carrier any would never consider switching to AT&T for just this reason. I work as a musician, and the noises GSM phones make come through mics, monitors, mains, you name it. It's even worse in a recording studio... Have a take blown because someone's phone isn't completely off (I'm used to leaving it on vibrate for all work)...
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post #18 of 37
12/7/08 at 2:49am
I dont think it has anything to do with how often it send data. as I said here in OZ while in a 3G coverage area I can use email, internet, whatever without hearing so much as a squeek; but if I travel through an area that has a 3G blackspot the phone has to ping the tower when it switches to 2G and this creates quite a noticeable RF interference and while on 2G there is a constant buzzing in the background. while on 3G there is no noise whatsoever here.
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post #19 of 37
12/7/08 at 5:51am
I must say this Nuforce Icon Mobile amp is sounding more and more transparent as it burns in - I'm fairly sure I like the Icon Mobile more than my D2 Boa, and maybe also my Meier Headsix - it has a similar forward sound as the Headsix, but with added ambience and air or space (via analog input or USB DAC).

It sounds very nice from the line out dock of my iPhone 3G and so far I have not heard any buzzing from my iPhone 3G interference all night. I am watching that closely, and so far the Nuforce has been one of the best portables at rejecting the dreaded iPhone chatter - but until tonight it was still possible to hear noise if the amp was within 6-8 inches of the phone. Now that has gone away for unexplained reasons. It's possible burn-in further improves its resistance to iPhone chatter or buzzing.

I have identified iPhone chatter with my Pico, D2 Viper, D2 Boa and D3 Python, with the Python being the worst offender, and Pico being almost as resistant as the Nuforce - until the Icon Mobile got quiet tonight. I have brought the Predator in from the car and will play with it more tomorrow to look for iPhone chatter.

One thing that has changed is I now have 4 bars of 3G signal at my house now, while before it was 1-2 bars and it would switch to Edge often.
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post #20 of 37
12/7/08 at 12:26pm
Quote:
Originally Posted by HeadphoneAddict View Post

One thing that has changed is I now have 4 bars of 3G signal at my house now, while before it was 1-2 bars and it would switch to Edge often.
Sounds like you have some new towers in your vicinity!
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post #21 of 37
12/7/08 at 3:21pm
Hah! my teenage daughter tricked me and installed a Quick Bridge Solutions - EM Shield for iPhone RFI blocking business card into the back of my new silicone iPhone case, and I'm pretty sure that since she did it yesterday that I have found the reason my Nuforce is silent with the iPhone now.

I was complaining to her how the card wouldn't fit into my crystal case because it was too tight, and we went to Best Buy to get a DLO silicone case. So while I was driving I had her put the iPhone in the new case. I went out to the car to get the RFI blocking card today and it wasn't there, and then she pointed it out to me as being in the silicone case already.

Huge thumbs up for this product from Quick Bridge Solutions - EM Shield for iPhone !!

Now I have to do testing without the card again...
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post #22 of 37
12/7/08 at 7:52pm
what about a headroom dac?
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post #23 of 37
12/7/08 at 9:41pm
Interesting. I may try something similar with foil or an anti-static bag inside a case. I would guess any material that acts as a shield for the specific frequency band would work?
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post #24 of 37
12/7/08 at 10:32pm
Quote:
Originally Posted by HeadphoneAddict View Post

Huge thumbs up for this product from Quick Bridge Solutions - EM Shield for iPhone !!
And at $3.99 it sounds like a great deal
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post #25 of 37
12/7/08 at 11:09pm
Well, with 4 bars of ATT 3G and no quickbridge card inside my case, I still don't heard any iPhone buzz right now (been gone all day). I'm off to dinner and will listen more tonight.
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post #26 of 37
12/8/08 at 1:24am
Just ordered my Icon Mobile! It will come in time for me to enjoy them with my birthday present: Alessandro M1s!
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post #27 of 37
12/8/08 at 2:37am
Quote:
Originally Posted by HeadphoneAddict View Post
Well, with 4 bars of ATT 3G and no quickbridge card inside my case, I still don't heard any iPhone buzz right now (been gone all day). I'm off to dinner and will listen more tonight.
Well, the iPhone buzz is still significantly better with the Nuforce than with the D2 Boa and D3 Python, but not totally gone unless I use the Quick Bridge EM blocking card, which makes all my amps silent. They should include one of these card with every iPhone for free!
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post #28 of 37
12/9/08 at 8:12pm
Thread Starter 
Hmm alright, thanks for the info. However, I think I am not understanding correctly. Are you saying that if your iPhone was in the vicinity of your D3 Python, it was making it staticy? I really have started to like the D3 Python, but if I really cant use it with my iPhone, it is not going to work lol. Is the issue just if the iPhone is laying on top of the amp?

I looked at the Nuforce, and it seems like a good mobile amp, but I am a little weary of it being a decent desktop amp also.

I also took a look at the Raptor, but I couldnt find it for under $400? Is that correct? I am looking for quality, but I would prefer to keep it under $250, 300 max. I am not quite addicted heroine-style yet.
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post #29 of 37
12/10/08 at 5:21pm
just out of interest, do the makers ship those amps to the uk? the predator amps look cool

even better is if anyone's selling one... would use it with a 120GB ipod classic, i currently have a cmoy amp - looks exactly like this



but with a lot more dings and dents.
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post #30 of 37
12/10/08 at 8:31pm
Quote:
Originally Posted by Wiggy Fuzz View Post
just out of interest, do the makers ship those amps to the uk? the predator amps look cool

even better is if anyone's selling one... would use it with a 120GB ipod classic, i currently have a cmoy amp - looks exactly like this



but with a lot more dings and dents.
If that is a Caffeine Pro it is better than a typical cMoy and sounds like some $150 amps (mine was very very similar in sound to my Headsix).
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