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New Portable Amp/Dac: iBasso D1 **with updates on the first page** - Page 45

post #661 of 2626
8/28/07 at 8:45pm
Thread Starter 
I don't have the Move but right now I am listening to the 650's as I tend to like them better with the D1 than the Equation RP21's, and the sound is big and powerful. The bass is well controlled but not overphowering, and this is while listening to Dire Straits, which has ample bass. I listen about 1 oclock for loud. Anything past his and it is too loud but no distortion. I turned it up to the 4 oclock , partially off my head, and the sound is still clean with no distortion. I have tried this with different opamp configurations and the D1 holds up with plenty of power.
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post #662 of 2626
8/28/07 at 9:05pm
Thanks for your help on this...

Would that be the famous 8066 opamp?
http://www.soundlabsgroup.com.au/p/I...+Module+AD8066

Is that all I need to buy?
The buffer you mention is the stock one, I assume.

And I just need to plug that one in instead of the other, right? Being mindful of the orientation of course...

Cheers
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post #663 of 2626
8/28/07 at 9:11pm
Thread Starter 
They aren't cheap are they? I don't know the conversion to US dollars, I guess I should look it up. Yes that is the opamp. I am using the AD8397's in the buffers postions but I liked the AD8066 with the stock buffers as well. HiFlight likes the 2111 also and seems to prefer it a little to the 8066 as in the last bit of refinement.


Interesting: I am using the HD650, which I haven't been using too much lately because they are not closed and the person sitting across from me here at home doesn't want to hear the music. I don't blame her but I have listened off and on with them, when she is gone and today I let it run much of the day with them. The sound has changed over the last few hours and I wonder if it is the amp pushing a different load that may be making some positive changes as the sound has gotten a little more open and the bass is very solid. I go back to my Reference and Monica to compare to and not just my ears as they may or may not be adjusting to the sound. It is always good to have a reference point.
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post #664 of 2626
8/28/07 at 9:25pm
Quote:
Originally Posted by Sisyphos View Post
Could you please do a comparison MOVE / D1 using the HD650?

I just ordered a D1 assuming it's quite a good match with the HD650 ...
Sure will. It won't be until tomorrow night as I need to hit the magic 150 hours.
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post #665 of 2626
8/28/07 at 9:30pm
Quote:
Originally Posted by jamato8 View Post
I don't have the Move but right now I am listening to the 650's as I tend to like them better with the D1 than the Equation RP21's, and the sound is big and powerful. The bass is well controlled but not overphowering, and this is while listening to Dire Straits, which has ample bass. I listen about 1 oclock for loud. Anything past his and it is too loud but no distortion. I turned it up to the 4 oclock , partially off my head, and the sound is still clean with no distortion. I have tried this with different opamp configurations and the D1 holds up with plenty of power.
Thanks for your promising impressions. Dire Straits rock! 'On every street' was the second CD I ever bought (fifteen years ago) and I have liked them a lot since then ... and now I know that their first two albums are even better.
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post #666 of 2626
8/28/07 at 9:34pm
Quote:
Originally Posted by jamato8 View Post
Looking at this photo, I'm having difficulty picturing how the two AD8397s on the adapters can both fit into those buffer sockets-- they seem extremely close together as it is and aren't the Brown Dogs rather larger than the NE5532s (as the AD823 is here)?

John or Ron, could either of you post a photo with the AD8397s in place?

Thanks!
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post #667 of 2626
8/28/07 at 9:35pm
Quote:
Originally Posted by itsborken View Post
Sure will. It won't be until tomorrow night as I need to hit the magic 150 hours.
Thank you, I'm really curious ...
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post #668 of 2626
8/28/07 at 9:37pm
Agreed. My reference point is the Move at the moment, and I have to say, without direct comparison, I would not have noticed some of the D1 'flaws' that easily. And I am mindful of the fact that a reference is the sound I like rather than some kind of objective point when it comes to good amps... This said, the Move is bloody brilliant...
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post #669 of 2626
8/28/07 at 9:44pm
http://www.newark.com/jsp/Semiconduc...equestid=76057

http://www.newark.com/jsp/Semiconduc...sp?sku=96K4522

http://www.newark.com/jsp/Semiconduc...sp?sku=19M8882

Are those the right ones to get? Also where can I get the brown dog adapters if I end up with a D1? And I need two of the AD8066 one's right? Thanks a lot.
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post #670 of 2626
8/28/07 at 9:51pm
I really hate this place. I finally gave in and ordered one.
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post #671 of 2626
8/28/07 at 10:07pm
Quote:
Originally Posted by souperman View Post
http://www.newark.com/jsp/Semiconduc...equestid=76057

http://www.newark.com/jsp/Semiconduc...sp?sku=96K4522

http://www.newark.com/jsp/Semiconduc...sp?sku=19M8882

Are those the right ones to get? Also where can I get the brown dog adapters if I end up with a D1? And I need two of the AD8066 one's right? Thanks a lot.
Here is where you can get the Browndogs:
http://www.cimarrontechnology.com/in...PROD&ProdID=12

Yes it is tight, but they fit. Just about touching. I put a loop of thread around each one so I can lift them out.

You only need one AD8066, as they are dual-channel. The D1 uses dual channel buffers, which is different than many of the other portable amps. That limits the buffer selection slightly, but it is hard for me to imagine a better choice than the AD8397 from the standpoint of output power, and current drain. It is also very low noise with excellent square-wave response.

I am preferring the OPA2111 over the 8066 as I think the high end is rendered a bit more accurately. The drawback is that it is quite expensive and hard to find.
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post #672 of 2626
8/28/07 at 10:27pm
Quote:
Originally Posted by Dexdexter View Post
John or Ron, could either of you post a photo with the AD8397s in place?

Thanks!
Yes could either of you do that please? Aren't there two places for buffers? Why would you only need one? Sorry I'm a noob at this. I see there are two NE5532's in place. Also aren't the OPA2111's there at Newark where I listed it?
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post #673 of 2626
8/28/07 at 10:31pm
Thread Starter 
You need two AD8397's. They go in place of the NE5532.

Find some headphones that are harder to drive and crank it up with the D1. this is not a listening level but above that to really make the amp work. I found out today this had some positive effects on the D1.
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post #674 of 2626
8/28/07 at 10:36pm
Quote:
Originally Posted by souperman View Post
Also aren't the OPA2111's there at Newark where I listed it?
On order - with a lead time of 201 days or less. Apparently they are hard to come by.
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post #675 of 2626
8/28/07 at 10:45pm
I am quite confused now...

So, let me try to get some clarifications here:
If I want to roll amp with the 8066

- I need to replace the stock opamp with the 8066
AND
- I need two AD8397 to replace the NE5532

Is that correct?
Can I just replace the 8066 by itself or that won't make any significant SQ changes?

Can't find the 2111.. Seems hard to get indeed.
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