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iBasso P2 - Page 9

post #121 of 324
12/20/07 at 12:51pm
Jamato,
How does P2 stack up against Xin's amps? I am enjoying D1 a lot and was thinking of getting P2. Do you think its a step above Supermini IV (which I have)?
Thanks!
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post #122 of 324
12/20/07 at 1:11pm
The Reference and P2 present the music a little different and both are excellent. I will be honest that I think it is a matter of what one is looking for in music but the differences are subtle, imo but there. I will have to listen some more as I like to give a fresh impression.
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post #123 of 324
12/21/07 at 12:31am
I'm currently running 2 x AD744BQ's in ouput bypass mode in L/R and AD8066 in the 3/4 channel. This is without a doubt the most detailed combination I have listened to,to date. The bass quantity is amazing yet tight and deep. Deepest bass I've heard to date. Treble extension very good. Imaging is almost holographic and soundstaging very good. I had the AD744BQ's left over from when I had the Larocco P.R. II and used them for the MK III mod. Here's a pic to see how this barely fits into the unit.

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post #124 of 324
12/21/07 at 3:41am
How is it output bypass mode? I will have to get some of these opamps and the adapter. The P2 is cool.
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post #125 of 324
12/21/07 at 4:06am
Quote:
Originally Posted by jamato8 View Post
How is it output bypass mode? I will have to get some of these opamps and the adapter. The P2 is cool.
Hope this helps.
Quote:
ppl on ipastudio

Idealy you would use SO8IC AD744AR's and mount upon the adaptor most people use to mount two OPA627's on however you then break off pin 6 of each AD744AR and install them normaly upon the Adaptor board then you put a solder bridge between the pads wher pins 5&6 are this conectes pin 5 to pin 6.

using the Dual DIP packages requires a adaptor to adapt two Singel DIP8 OpAmps to a DUAL DIP8 then you cut pin 6 off at the lower edge of the Chips body so as to not allow it to conect to the socket. then install the Device normaly but bend pin 5 over so as to contact pin 6 put a small solder bridge for good measure.
So in the DIP version the the number 5 pin goes into the number 6 slot(the 6 pin can simply be broken off) in the adapter for both op-amps. This puts it into output bypass mode. It has to be bent to reach the 6 hole in the adapter, and there's a real risk of breaking the leg off the op-amp.
You also have to file down or cut the edges off the adapter once the op-amps are installed, so it'll fit, if it's the DIP version. Best bet is to do the SOIC version, as it'll maximize space. I had to bend one of the small caps out of the way to make the dual adapter fit. It might be noticeable in that crappy pic.

I also switched back to the stock NE5532 in the 3/4 position, as it seemed just too bassy with the AD8066 in that channel. I know a few here have stated that the op-amp in the 3/4 channel doesn't affect the sound, but I beg to differ. I'm listening to this amp with Westone ES2's, and they are the most sensitive headphone I've ever heard. They really pick up everything. I believe whatever is in 3/4 has some kind of complimentary effect on whatever is in L/R. With the NE5532 in 3/4, the music has a little less bass quantity, and even more transparent. There was only one more step in the mod with the Larocco P.R. II, and that was to disable the Class A biasing. I'm not even going to try to go there. I did away with that mod after a few
weeks as the sound seemed to be lacking impact, which isn't the case at all with the P2.
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post #126 of 324
12/21/07 at 4:50am
That's right, I used to do bypassing with some of Xin's amps. I forgot. Thanks. Geez, I hope I am not getting senile. Thanks for the explanation.
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post #127 of 324
12/21/07 at 12:01pm
this things sounds better and better the more I use it. Unless that's just me getting used to it.
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post #128 of 324
12/21/07 at 12:56pm
Quote:
Originally Posted by fateicon View Post
this things sounds better and better the more I use it. Unless that's just me getting used to it.
I have base lines with other amps and I would have to agree with you, it just better and better.
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post #129 of 324
12/23/07 at 4:11pm
I find it really amazing nobody talks about this amp on Head-Fi. Are people on here that fooled with a high price being equivalent to superior quality?
I've had some top-of-the-line portable amps, and even with the stock configuration, this amp either beats or equals them all; but mostly just beats: RSA Hornet,SR-71,Tomahawk,Larocco P.R. II,Portaphile v2v2
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post #130 of 324
12/23/07 at 6:26pm
I think maybe it still needs to settle in and get around to enough people. With a discrete transistor output and the ability to remain stable with a number of different opamps, it should give a glimpse or more of highend sound.
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post #131 of 324
12/23/07 at 8:43pm
Quote:
Originally Posted by Pete7 View Post
I find it really amazing nobody talks about this amp on Head-Fi. Are people on here that fooled with a high price being equivalent to superior quality?
I've had some top-of-the-line portable amps, and even with the stock configuration, this amp either beats or equals them all; but mostly just beats: RSA Hornet,SR-71,Tomahawk,Larocco P.R. II,Portaphile v2v2
Sorry Pete7, I'm just postless with regards to P2 coz I was overwhelmed with its sounds signature Mine still on its stock form, honestly I'm ok with it and my crap and Tin-canned sound'n Ipod nows giving me the pleasure the same as with my Sony-Hornet combo. The Ipod-P2 combo is just a different flavor on my ears.

Happy listeni'n!
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post #132 of 324
12/24/07 at 8:47am
anyone know much about this impedence matching switch? The booklet doesn't say much, but I didn't exactly email Ibasso yet either.

Sometimes I find that using this with the RS-1 causes fatigue, and I'm not listening to 00s cds and their heavy compression.

I don't ever really use the bass boost. It's too much. Occasionally it's good for a bass deficient cd.

I had been listening on the highest gain setting. I just went to the middle and now the lowest.

Any of them sound acceptable. I can get a sound to fill these still stock RS-1s on any of the settings. Of course, it fills more and the details seem clearer with the highest setting. I usually set the volume to right where it hits the v in the word volume-with that gain setting.

I'd like to really get a full, "swimming in the music" sound, but without blowing my head off. Sometimes I feel this thing has a bit too much bass.

I'm wondering if maybe I should get a new source that I can tweak sound on, and maybe a different cable, since I'm using a $6 mini to rca.

I'm listening to stuff like Priest, Expose, Dokken, King Diamond, Elton John, and Iced Earth.

I'm also wondering if wearing glasses with RS-1s is a problem. In taking them off now, it certainly feels better. Could just be some psychological thing where I'm expecting things to feel more comfortable. I'll try listening without glasses some more to see if fatigue sets in as much.

Maybe I need some pads for the part that goes around my ear.
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post #133 of 324
12/28/07 at 12:40pm
basman...do you remember aprox how long it took from the time you ordered to the time of arrival? And did you have to sign for it? I have never had anything delivered from dhl and live in the middle of nowhere...if they require signature..I will try to have it sent to my or my wifes work. Ups will leave my packages w/o my being home, not fed-ex and don't know about dhl. Thanks...
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post #134 of 324
12/28/07 at 12:46pm
Quote:
Originally Posted by Del Griffith View Post
basman...do you remember aprox how long it took from the time you ordered to the time of arrival? And did you have to sign for it? I have never had anything delivered from dhl and live in the middle of nowhere...if they require signature..I will try to have it sent to my or my wifes work. Ups will leave my packages w/o my being home, not fed-ex and don't know about dhl. Thanks...
Mine only took 5 days to be delivered by DHL. Ibasso sent me a tracking number and when it cleared the customs I just post a note on my door to leave the package on the guard. No need to sign for it man, DHL has amazing quick service unlike fedex. By the way what country you are?
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post #135 of 324
12/28/07 at 12:52pm
I am finding the sound quality of the P2 to be some of the best quality from a portable that I have heard. It is very transparent with an excellent quality for rendering large venues, as in orchestral or rock live recordings, in a natural and believable manner. It drives whatever headphones I use with ease and is totally quiet with the IEM's I have tried. I wish the battery life were longer but it suffices.
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