The D3 has a major interference issue that should be know to all...if you plan to use it with an iphone as I did, find another amp...if you are using it for the DAC or with an ipod, etc then you should be OK, but if you are around a lot of cell phones or other RF interference, you will get a headache. I thought it was normal until I read some recent posts and did my own investigation:
http://www.head-fi.org/forums/f105/i...ervice-381705/
http://www.head-fi.org/forums/f105/h...oblems-381351/
I emailed ibasso and they said it was an opamp issue and they were unwilling to rectify the situation...here are two of their replies to me:
Dear Sir,
Thank you for your email.
The RF interference problem is because of the opamp. It cant be eliminated except we change the opamp. But these opamps on the D3 has very good sound quality. We are not planningto change them.
We suggest you to keep your cell phone away from the D3, and the D3 can work fine.
If you have any further questions, please feel free to contact us.
Sincerely
iBasso Audio
Dear Sir,
Thank you for your email.
I dont think the RF interfernce is a problem on the D3 design. The RF interference is because of the design of the opamp, which is produced by AD. If you consider the D3 has problem on the design. I think AD need to call back many of their chips.
Also, we consider sound quality in the prior position, the D3 has very good sound quality, and we consider it is a very successful design.
If you dont like the D3, you can return it for refund.
Sincerely
iBasso Audio
Then when I go to send a reply to the first email, my email was blocked by a spam blocker, so I sent another message from my work email to make sure it went through, then the subsequent attempt to respond to their reply was blocked. It is a great sounding amp, dont get me wrong but I am not in a situation to own two amps...I need one that functions for all of my purposes and thought this was it. I feel that ibasso should have made public this issue as it sounds like they were fully aware, so do I lose $$$ and mail it back...