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iBasso P2 - Page 5

post #61 of 324
12/7/07 at 5:11pm
how does the sound compare to a $300 - $400 desktop amp? I am looking to make my first amp purchase and hoping it will be my last. But I am not rich by an means. I would really like details, and enjoy when i can hear some weight to the music, soundstage is a plus. Dont mean to go off topic.
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post #62 of 324
12/7/07 at 6:03pm
Home amp, good ones, even if inexpensive, normally have a more generous power supply so they are going to have more ease with apparent power and drive. I think that for the money the P2 offers a very nice amplifier.

There is always a first but seldom an only.
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post #63 of 324
12/7/07 at 8:49pm
Thread Starter 
After much opamp rolling, my choice for the P2 is the OPA2107.
It has very nice synergy with iBassos choice of buffer. This opamp sounds better in the P2 than it does in other amps I have tried it in.
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post #64 of 324
12/7/07 at 8:52pm
Quote:
Originally Posted by HiFlight View Post
After much opamp rolling, my choice for the P2 is the OPA2107.
It has very nice synergy with iBassos choice of buffer. This opamp sounds better in the P2 than it does in other amps I have tried it in.
Ron, what headphones are you using to do most of your evaluating.
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post #65 of 324
12/8/07 at 8:01am
Has anyone compared the p2 to a headsix yet?
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post #66 of 324
12/8/07 at 10:12am
Thread Starter 
Quote:
Originally Posted by jamato8 View Post
Ron, what headphones are you using to do most of your evaluating.
1. Sennheiser HD650/Revelation

2. Sony F1

3. IEM: Yuin PK1 & PK2
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post #67 of 324
12/8/07 at 2:34pm
Quote:
Originally Posted by HiFlight View Post
1. Sennheiser HD650/Revelation

2. Sony F1

3. IEM: Yuin PK1 & PK2
How would you compare the PK1 to the 650's? Simon said that to him they were very close.
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post #68 of 324
12/8/07 at 4:18pm
Thread Starter 
Well, my Senns are recabled so a comparison would not be real fair. The signatures of each are similar, but the HD650 has more impact. Frequency range seems similar when feeding with an audio signal generator. The PK1 is certainly a fine phone. What little it might lack in performance in comparison to the HE650 is more than made up for in comfort.
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post #69 of 324
12/9/07 at 4:18am
At a little over 100 hours I found my P2 to close in and many positive aspects disappeared but after another 12 hours of constant use it is opening up again with a nice airy presentation. I am working at the computer a lot so I hear these changes and wait. I also have a very well used amp to compare the sound to that acts as my baseline so it isn't my "mind/brain" doing the changing.
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post #70 of 324
12/9/07 at 10:02am
This burn in process is a killer! my P2 has about 50+ hours. This time I am not going to listen untill it has 200 hours which means sometime late next Saturday or early next Sunday.
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post #71 of 324
12/9/07 at 1:43pm
HiFlight, can you post the pic of your P2 after replacing the BG ?
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post #72 of 324
12/9/07 at 2:19pm
Ron, when will you post the first real comparisons?
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post #73 of 324
12/9/07 at 3:15pm
Pictures next to an iPod classic/video?
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post #74 of 324
12/9/07 at 6:19pm
Thread Starter 
OK, I will try to get some pix out showing the BG and do some comparison reviews soon. I have been busy the past several days but things will slow down in the next couple days.

For starters, the P2 has a warm, full sound, somewhat like the Move. It is easy do listen to for long periods of time without fatigue.

It is quite receptive to changes in opamps. The stock opamp, LM1364 does a good job. I also like the AD8620 and OPA2107. I haven't yet had a chance to run thru the various combinations of LR and IC-2 but will try to get it done soon and post some more opinions.
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post #75 of 324
12/9/07 at 8:33pm
Well I went and did it.

I bypassed the large 4700uf power supply caps with .47 HiQ Black Gates and replaced the two 22uf polar caps with two 47uf HiQ and two .47 HiQ nonpolar Black Gates. The sound? Well they need some time but there is a bit of refinement. I am still running the stock opamps.
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