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Fostex HP-A4 - Page 4

post #46 of 289

Yes I can but that will make the entire concept of taking A4 for the road obsolete. 

post #47 of 289
Quote:
Originally Posted by audionewbi View Post

Yes I can but that will make the entire concept of taking A4 for the road obsolete. 
Didn't realise you meant mobile (battery powered?). I'm sure you can get a battery pack with usb power output that'd do the job, theres a bunch available for mobile phone charging, some with lots of juice. Though that still doesnt seem very portable to me, laptop usb buspowered would still be easiest and would the sq really be that different? What's the theory that more overhead/current is more stable and doesnt have any interruptions from the laptop processor?
post #48 of 289
Quote:
Originally Posted by designbykai View Post


Didn't realise you meant mobile (battery powered?). I'm sure you can get a battery pack with usb power output that'd do the job, theres a bunch available for mobile phone charging, some with lots of juice. Though that still doesnt seem very portable to me, laptop usb buspowered would still be easiest and would the sq really be that different? What's the theory that more overhead/current is more stable and doesnt have any interruptions from the laptop processor?

with internal power it will open up the A4 to be more than just a USB dac/amp. I guess clean power requires internal to be designed differnetly and hence the final product no doubt will be larger and cost more. All and all clean power can make a difference and will provide more power. 

post #49 of 289
Ah yes true, would improve the amp section considerably and be better for harder to drive cans, provide higher gain settings etc. Still, this is a different sort of (portable) product. If synergy is good with TH600s which aren't very hard to drive anyway then I'm pretty much sold (although I would like a WA7 which is supposedly great synergy but twice the price, hmm).
post #50 of 289
Quote:
Originally Posted by designbykai View Post

Well can't you use a usb-ac adapter or power supply for the power, and feed it the audio over optical? I do this with my Audioengine d1 sometimes especially if using it with ps3 etc.

 

I would do the same. This is a good way to mitigate potential USB audio+power noise issues.

post #51 of 289

I emailed Fostex and asked about the headphone output impedance. This is their reply.

 

"We do not make the headphone output public, sorry. Thank you for your understanding."

post #52 of 289

that normally can mean one thing, but than again that could also mean they follow the listen to your ear not your eye philosophy. 

post #53 of 289

Or it could just be a response from some random helpdesk person who is too tired to look into the question... :)

post #54 of 289

Still no one got this yet? Seems like a very nice all-in-one compact solution. 

post #55 of 289
Quote:
Originally Posted by fengwei007 View Post
 

Still no one got this yet? Seems like a very nice all-in-one compact solution. 

 

I might be purchasing this amp next week, most probably from pricejapan. I'll keep you guys updated if I decide to buy it. :)

post #56 of 289

I pre-ordered it. Should be arriving either this week or next week.

post #57 of 289
Quote:
Originally Posted by lbbef View Post
 

I pre-ordered it. Should be arriving either this week or next week.

 

Cool, I hope you can make a small unboxing and post your impressions for us :D :popcorn:

post #58 of 289
Quote:
Originally Posted by alucard177 View Post
 

 

Cool, I hope you can make a small unboxing and post your impressions for us :D :popcorn:

Sure! Stay tuned! :)

post #59 of 289

Decided to complete my Fostex-collection and pre-ordered the A4 yesterday. Should arrive mid-february...

Glad I didn't buy the A3, this new incarnation design seems much nicer, I like the mini-A8 look. And it's the missing link to connect my TH600 to my MBP at my office.

 

Interesting choice with the DAC though as I like the sound of the AKM chip in the A8, it fits the TH900 that I use at home quite well.

post #60 of 289

Just to share! Headfonia has a short review on the HP-A4:

http://www.headfonia.com/fostex-hp-a4-mini-hp-a8/

:smile:

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