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iBasso P2

post #1 of 324
Thread Starter 
I just yesterday received a production version of the new P2. It is an exquisite litte amp, complete with leather cover and the same classy case style as the D1.

The amp is about the size of a pack of regular cigarettes, measuring about 3.25" long X 2.75 wide X 1" thick. This does not include the length of the volume knob.

The amplifier section has been developed to take adavantage of 4-channel architecture, which means that the preamp and amp sections in both left and right channels are isolated from each other.

Further embellishments include a 3-setting gain switch permitting gain choices of 0, 3 and 10. There is also a 3 position bass boost that offers boosts of 0, 3 db, and 6 db. The boost effect is very natural sounding and does not in any way color male voices or midbass. Both of these selectors are on the rear of the case, leaving the face of the amp very tidy.

The P2 is powered by 2 small lithium ion batteries that will power it for about 15 hours. Recharge time is about 2.5-3 hours, with the status indicated by 2 small LED lights on the back of the amp. Opamps sockets are PDIP, so standard opamps as well as SOIC opamps that are mounted on adapters can be used. Only dual-channel opamps can be used in the P2.

The amp is very receptive to opamp rolling, and I spent quite a bit of fun
time playing with different combinations. The delivered opamps were one each LT1364 and NE5532.

Overall, the sound is very expansive, with deep bass and smooth, detailed highs. Out of the box, I do believe that the sound was better than my D1 prior to rolling opamps and installing Black Gate caps.

I don't know for sure, but I would assume that this would likely be the amp section in the upcoming D2 or something very similar

I don't know what the pricing of this amp will be, but details will be forthcoming from iBasso in the very near future, I am sure.

Although there are many choices available for a small basic amp, based on my impressions of the sound quality and superb finish, the P2 should be a major contender in this niche.
post #2 of 324
Hey! You gotta camera? Take some different angles, please?>>> :^)
post #3 of 324
Bit of info from the site...

D2 R&D Report

Can someone help me understand how the P2 differs from the D1? Is it a direct upgrade/higher end/lower end model? Is it smaller? I presume the 4ch architecture mentioned differs from the D1?

And an image...
post #4 of 324
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post #5 of 324
Thread Starter 
The P2 differs from the D1 in that it is much smaller, has a different amp design, and is an amp only and does not include any digital inputs. The picture is a pre-production photo. The production amp has a similar high-quality faceplate design and logo as does the D1. It is a very attractive amp. The sound belies the size as it sounds like a much larger amp. As I mentioned in the first post of the thread, it has a very expansive soundstage.

The engineering report refers to the upcoming D2, not the P2.
post #6 of 324
Can you give some comments when pairing the P2 with your cowon D2?
post #7 of 324
yes i'm hoping some impression with cowon D2, as i'm using it too
post #8 of 324
answered above, sorry
post #9 of 324
Thread Starter 
Quote:
Originally Posted by Lil' Knight View Post
Can you give some comments when pairing the P2 with your cowon D2?
Well, the comparison is apples to oranges as the cowan D2 is an MP3 player whereas the iBasso P2 is strickly a portable amp. There is no comparison in sound, the P2 has far and away the best amplifier. Combined with the gain and bass enhance switches, it sound very good with any source that I have tried. The D2 sound much better when used as a source than it does without amplification. I find the highs to be strident in the D2 unless I use some EQ.
post #10 of 324
Quote:
Originally Posted by HiFlight View Post
The engineering report refers to the upcoming D2, not the P2.
It does indeed - sorry about that and thanks for pointing it out! I didn't realise there was a P2 and D2 on the way...
post #11 of 324
Quote:
Originally Posted by HiFlight View Post
Well, the comparison is apples to oranges as the cowan D2 is an MP3 player whereas the iBasso P2 is strickly a portable amp. There is no comparison in sound, the P2 has far and away the best amplifier. Combined with the gain and bass enhance switches, it sound very good with any source that I have tried. The D2 sound much better when used as a source than it does without amplification. I find the highs to be strident in the D2 unless I use some EQ.
Sorry if it is misleading. I mean your comment when using ( I mean "pairing" , not "compairing" ) the Cowon D2 + P2. Just because I'm looking for an ultra-portable amp for my D2.
post #12 of 324
Thread Starter 
Quote:
Originally Posted by Lil' Knight View Post
Sorry if it is misleading. I mean your comment when using ( I mean "pairing" , not "compairing" ) the Cowon D2 + P2. Just because I'm looking for an ultra-portable amp for my D2.
It pairs up very well with the D2. Sound is good and the size of each is very similar, with the D2 being slightly smaller in all dimensions. (my D2 is housed in a leather case, as is the P2)
post #13 of 324
Quote:
Originally Posted by HiFlight View Post
It pairs up very well with the D2. Sound is good and the size of each is very similar, with the D2 being slightly smaller in all dimensions. (my D2 is housed in a leather case, as is the P2)
Thanks HiFlight Sound really engaging Looking forward to seeing it now
post #14 of 324
Thread Starter 
I will try to post some pictures of the P2 inside and out this evening.
post #15 of 324
Thread Starter 
Here are some pictures of the new iBasso P2:







Notice that the opamp closest to the batteries is not a buffer. It is a channel 3/4 opamp. The buffers are located between the opamps and the input and output jacks. Vertical black transistors. The opamp in IC2 is not real critical, most any dual opamp will work.

I have replaced the 2 22uf electrolytic caps behind the on/off switch with Blackgate 47uf Hi-Q caps and am currently using an AD8599 opamp for LR. I am not finished rolling opamps in this amp yet!
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