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HM-901 - Page 23

post #331 of 889
2/6/13 at 9:39pm

Oh well, i only fit one of those catagories, i am a previous 801 owner but.........frown.gif

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post #332 of 889
2/7/13 at 2:25pm

Yeah, I also own the HM-801. When I read about that company policy, then I'm motivated, to change by the next investition to another manufacturer. Fortunately there are several others which offer very good units too.

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post #333 of 889
2/7/13 at 4:58pm
Quote:
Originally Posted by Carell View Post

Yeah, I also own the HM-801. When I read about that company policy, then I'm motivated, to change by the next investition to another manufacturer. Fortunately there are several others which offer very good units too.


Take a look at ibasso. The DX100 crushes the 801 ;).

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post #334 of 889
2/7/13 at 8:38pm
Quote:
Originally Posted by lee730 View Post


Take a look at ibasso. The DX100 crushes the 801 ;).

 

 

lee you also had a 801 or got a chance to listen to it?

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post #335 of 889
2/7/13 at 10:06pm
Quote:
Originally Posted by reddragon View Post

 

 

lee you also had a 801 or got a chance to listen to it?


I gathered this from multiple owners of both units. I've owned the 601 before which also was a no contest. I never opted for the 801 due to the rediculous output impedance, slug-like UI, bulky size, and cheap plastic feel. The 901 will continue this trend as the stock version will not be compatible with sensitive IEMs. That is a shame for a $999.99


Edited by lee730 - 2/7/13 at 10:09pm
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post #336 of 889
2/8/13 at 4:06am
I apologize if this has been asked before but a quick google search turned up nothing... Have the dimensions on the unit been released?
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post #337 of 889
2/9/13 at 8:44am
Quote:
Originally Posted by lee730 View Post


I gathered this from multiple owners of both units. I've owned the 601 before which also was a no contest. I never opted for the 801 due to the rediculous output impedance, slug-like UI, bulky size, and cheap plastic feel. The 901 will continue this trend as the stock version will not be compatible with sensitive IEMs. That is a shame for a $999.99

Have the final specs of the production unit been verified?

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post #338 of 889
2/9/13 at 3:03pm
Quote:
Originally Posted by Saraguie View Post

Have the final specs of the production unit been verified?

 

 

http://www.youtube.com/watch?v=wrow5B8DmYw&feature=player_embedded


Edited by lee730 - 2/9/13 at 3:16pm
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post #339 of 889
2/9/13 at 7:43pm
Quote:
Originally Posted by lee730 View Post

... The 901 will continue this trend as the stock version will not be compatible with sensitive IEMs. That is a shame for a $999.99

 

Where did you read this? Can you post the link please? Thanks.

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post #340 of 889
2/9/13 at 8:22pm
Quote:
Originally Posted by ClieOS View Post

 

Where did you read this? Can you post the link please? Thanks.


Watch the video ClieOS. Fang clearly states it in the video with Jude.

 

http://www.youtube.com/watch?v=wrow5B8DmYw&feature=player_embedded

 

If you want the device to work properly with Multi-BA or more so sensitive IEMs you have to pay a premium to get that type of card.

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post #341 of 889
2/9/13 at 8:49pm
Quote:
Originally Posted by lee730 View Post


Watch the video ClieOS. Fang clearly states it in the video with Jude.

 

http://www.youtube.com/watch?v=wrow5B8DmYw&feature=player_embedded

 

If you want the device to work properly with Multi-BA or more so sensitive IEMs you have to pay a premium to get that type of card.

 

Oh you mean that. The current AD8397 amp card that is shipped with HM901, as far as I know, is designed to be adaptative to both IEM and full size. It is not to say it won't drive multi-BA well, just not designed specifically for IEM. IEM need more current than gain while full size tend to need more gain than current, so you can't design one card that will do both very well without compromising other aspect. I think what Fang is saying is that there will be other amp modules that will be better for a certain headphone type. But the AD8397 card should still do relatively well, just not the best there can be. I know they are making a Minibox E card and they are also inventing HeadAmp to design a card.

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post #342 of 889
2/9/13 at 8:59pm
Quote:
Originally Posted by ClieOS View Post

 

Oh you mean that. The current AD8397 amp card that is shipped with HM901, as far as I know, is designed to be adaptative to both IEM and full size. It is not to say it won't drive multi-BA well, just not designed specifically for IEM. IEM need more current than gain while full size tend to need more gain than current, so you can't design one card that will do both very well without compromising other aspect. I think what Fang is saying is that there will be other amp modules that will be better for a certain headphone type. But the AD8397 card should still do relatively well, just not the best there can be. I know they are making a Minibox E card and they are also inventing HeadAmp to design a card.


If you listen to what he says the card specifically made for BA will feature low output impedance. There would be no reason for him to mention that if the stock card will have low output impedance. At least from what I gather the stock card will work (like any amp technically can) but it will have high/er output impedance.


Edited by lee730 - 2/9/13 at 9:00pm
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post #343 of 889
2/9/13 at 9:57pm
Quote:
Originally Posted by lee730 View Post


If you listen to what he says the card specifically made for BA will feature low output impedance. There would be no reason for him to mention that if the stock card will have low output impedance. At least from what I gather the stock card will work (like any amp technically can) but it will have high/er output impedance.

 

The reason why HM801's amp card have high output impedance are because they put resistor on the output path. You only need to remove them to lower it under 1 ohm. I have seen several picture of the new card and they don't have any output resistor at all, so I'll assume the output impedance shouldn't be high. Of course, the real confirmation will come when someone measured it.

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post #344 of 889
2/10/13 at 12:24am
Quote:
Originally Posted by ClieOS View Post

 

The reason why HM801's amp card have high output impedance are because they put resistor on the output path. You only need to remove them to lower it under 1 ohm. I have seen several picture of the new card and they don't have any output resistor at all, so I'll assume the output impedance shouldn't be high. Of course, the real confirmation will come when someone measured it.


I look forward to that and do hope I am wrong. But just from what he said in the video I am thinking otherwise...

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post #345 of 889
2/10/13 at 12:49am
Quote:
Originally Posted by ClieOS View Post

 

The reason why HM801's amp card have high output impedance are because they put resistor on the output path. You only need to remove them to lower it under 1 ohm. I have seen several picture of the new card and they don't have any output resistor at all, so I'll assume the output impedance shouldn't be high. Of course, the real confirmation will come when someone measured it.

 

is this hypothesis applicable to HM-601/2 as well, ClieOS?

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