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Have you considered the PS Audio GCHA headAmp?
http://www.musicdirect.com/p-7416-ps-audio-gcha-headphone-amp.aspx
I love the sound of that amp. Seems very neutral to me, puts out a couple watts per channel, dead silent, etc.

Have you considered the PS Audio GCHA headAmp?
http://www.musicdirect.com/p-7416-ps-audio-gcha-headphone-amp.aspx
I love the sound of that amp. Seems very neutral to me, puts out a couple watts per channel, dead silent, etc.
Has anyone taken extensive measurements? I don't even see basic specs on that site, which isn't a good sign, not to mention the fact the instruction manual recommends an aftermarket power cable. I'd like to keep this discussion to objectively neutral and silent equipment.

Has anyone taken extensive measurements? I don't even see basic specs on that site, which isn't a good sign, not to mention the fact the instruction manual recommends an aftermarket power cable. I'd like to keep this discussion to objectively neutral and silent equipment.
It's completely up to you, but you might objectively consider to do a google search for "PS Audio GCHA" and read the reviews and about the company.
Sorry, can't discuss or link to banned users activities.
TIA
I questioned fiio about the high output impedance of the smaller jack which is 43ohms, I have a set of soundmagic Pl11's which are 8ohm i plugged them in the small jack with the 43ohm output impedance i expected the frequency responce to change but it didn't, and fiio said
"The reason is that the loader is not " pure resistor ", the real headphone/earphone includes resistor, capacitor and inductance.
A resistor connect to a capacitor or inductance will change the frequency response.
BTW , the 10 ohms resistor is the design request by the TI. it is for safe.
What I means is consider the headphone/earphone as a pure resistor."
The higher output impedence only seems to effect balanced armature IEM headphones.

I questioned fiio about the high output impedance of the smaller jack which is 43ohms, I have a set of soundmagic Pl11's which are 8ohm i plugged them in the small jack with the 43ohm output impedance i expected the frequency responce to change but it didn't, and fiio said
"The reason is that the loader is not " pure resistor ", the real headphone/earphone includes resistor, capacitor and inductance.
A resistor connect to a capacitor or inductance will change the frequency response.
BTW , the 10 ohms resistor is the design request by the TI. it is for safe.
What I means is consider the headphone/earphone as a pure resistor."
The higher output impedence only seems to effect balanced armature IEM headphones.
This just isn't accurate. The combination of resistance, capacitance, and inductance in a line creates impedance; which is the opposition to current flow in an AC circuit. This will drop voltage across the output section no matter what. With a set of IEM's like the soundmagics you mentioned, your headphone impedance can vary a lot across the frequency response range, giving you varying amounts of voltage drop across the output section of the headphone amp. This variation is worse with both a higher amp output impedance and a lower headphone impedance.
Now you may have some changes based on the phase angle created by the capacitive/inductive reactances (the equivalent resistance created by a reactive load) that will change how current and/or voltage is consumed (because it will "consume" voltage/current on quarter cycles and "release" voltage/current on quarter cycles of the AC waveform). However, you will still have the overall opposition to current and resultant voltage drop no matter what the reactive elements of the load are doing, that phase angle will only tell you how much real load is being applied to the headphones.
Furthermore, because of the relatively high output impedance you talked of (43 ohms), you will be forced to turn the volume up higher than normal, which will result in more noise, distortion, etc... being passed through the amp (this is due to an overall higher closed loop gain), all of which can degrade sound quality.
To the OP, if you've found a good DIY project, go ahead and build it. Those can be very rewarding!!
It's not my DIY project, but will apparently be marketed as one through a future retailer. I think I will try it if it isn't too complex. It'd be my first time 
If anyone's interested in the project I'm talking about, PM me. The inventor was banned, so apparently I can't discuss it publicly (though I'm not sure where that is in the TOS). Am I allowed to discuss it via PM?

It's not my DIY project, but will apparently be marketed as one through a future retailer. I think I will try it if it isn't too complex. It'd be my first time 
If anyone's interested in the project I'm talking about, PM me. The inventor was banned, so apparently I can't discuss it publicly (though I'm not sure where that is in the TOS). Am I allowed to discuss it via PM?
You are not encouraged to discuss this individual even in PMs. Why not use his blog site and forum facilities for that?
I'm in a DAC mood right now. Does anyone have any knowledge of the performance of these (beyond published specs)?
Balanced outputs too, but I won't use them)
@ Head Injury:
There's nothing wrong with upsampling, the Benchmark does it too. The DacMagic measures very good for the cost in line with the DAC1 save USB. I've gone from a much more expensive DAC down to the DAC Magic with no problems. I imagine I could get an even lesser DAC and still be happy, but I got mine for a better than average price new.

About an hour ago I was thinking of that. The basic version is $999, you're right.
I don't know, though. I mean, I do want better-than-inaudible specs for peace of mind, but I think a DAC1 might be overkill. Like Shike said, the DacMagic isn't that much worse, and the difference should be inaudible. They both even offer balanced output, if I ever choose to go that route. If I buy/make the DIY-which-must-not-be-named, I'd probably be about $300-400 under budget with the DacMagic or a similar $500ish DAC.
And actually, until you mentioned it, I forgot it had a headphone amp built in. It's sounding more tempting by the minute...
Now that I've mentioned the subject, is balanced worthwhile? LCD-2's removable cables would make it a relatively painless transition.

About an hour ago I was thinking of that. The basic version is $999, you're right.
I don't know, though. I mean, I do want better-than-inaudible specs for peace of mind, but I think a DAC1 might be overkill. Like Shike said, the DacMagic isn't that much worse, and the difference should be inaudible. They both even offer balanced output, if I ever choose to go that route. If I buy/make the DIY-which-must-not-be-named, I'd probably be about $300-400 under budget with the DacMagic or a similar $500ish DAC.
And actually, until you mentioned it, I forgot it had a headphone amp built in. It's sounding more tempting by the minute...
Now that I've mentioned the subject, is balanced worthwhile? LCD-2's removable cables would make it a relatively painless transition.
I've yet to seen a real reason to go with balanced for headphones myself, and I think there's been past discussions about it on this sub-forum worth searching for ;)