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HiFiMAN HM-901 visit pg 18. IMGS pg 19. NEW beta FW 1st page. . to the 901s. .new 901s FW . - Page 92

post #1366 of 3412
Quote:
Originally Posted by zachchen1996 View Post

Im using the hidition nt6 pro. I only use the balanced amp, and in normal mode it sounds clearer and better than when the amp is in balanced mode. I think something might be seriously wrong with my 901 or the amp?

Is your cable balanced? It won't sound right if you run normal cable in balanced mode.
post #1367 of 3412
Thread Starter 
Quote:
Originally Posted by kkcc View Post


Is your cable balanced? It won't sound right if you run normal cable in balanced mode.

 

That is very true. Though for some reason, to my ear, switching it to balanced with an unbalance cable inserted also sound better. 

 
I have made up a very nice TRRS to Hirose with some nice very high end cable and I can now use all of my phones balanced with the 901. 
post #1368 of 3412
Quote:
Originally Posted by jamato8 View Post

That is very true. Though for some reason, to my ear, switching it to balanced with an unbalance cable inserted also sound better. 
 
I have made up a very nice TRRS to Hirose with some nice very high end cable and I can now use all of my phones balanced with the 901. 

I believe you will get inverted phase issue if using single ended cable. Depends on the type of music you may actually like it. For classical, definitely you will notice it is wrong immediately but for other studio mixed electronic stuff you may still like it.
post #1369 of 3412
Quote:
Originally Posted by kkcc View Post


Is your cable balanced? It won't sound right if you run normal cable in balanced mode.

 

Yes it is a DHC fusion cable terminated with trrs plug

post #1370 of 3412
Thread Starter 
Quote:
Originally Posted by kkcc View Post


I believe you will get inverted phase issue if using single ended cable. Depends on the type of music you may actually like it. For classical, definitely you will notice it is wrong immediately but for other studio mixed electronic stuff you may still like it.

 

I understand but to my ear, the sound is cleaner and more spacious. 

post #1371 of 3412
Quote:
Originally Posted by zachchen1996 View Post

Yes it is a DHC fusion cable terminated with trrs plug

Then maybe sth is off. But also keep in mind the key improvement I experienced is from the amp board upgrade rather than the SE to Balanced change.

I would even say the SE to balanced changes is subtle enough that the materials used for the cable might make as much or even more of a difference. It is hard ti ascertain unless youvto a/b the same cable in normal and trrs termination.

For reference, I had yet to decide to balance my tralucent gold/silver cable.
post #1372 of 3412
Quote:
Originally Posted by kkcc View Post


Then maybe sth is off. But also keep in mind the key improvement I experienced is from the amp board upgrade rather than the SE to Balanced change.

I would even say the SE to balanced changes is subtle enough that the materials used for the cable might make as much or even more of a difference. It is hard ti ascertain unless youvto a/b the same cable in normal and trrs termination.

For reference, I had yet to decide to balance my tralucent gold/silver cable.

 

Yes i am using the exact same cable for both se and balanced mode as I have dhc ultrashort trrs to trs adapter

post #1373 of 3412
Thread Starter 
Quote:
Originally Posted by zachchen1996 View Post
 

 

Yes i am using the exact same cable for both se and balanced mode as I have dhc ultrashort trrs to trs adapter

 

If you have the TRRS and have the switch set to balanced, to my ears, the sound should be an improvement not the other way around. 

post #1374 of 3412
Quote:
Originally Posted by jamato8 View Post
 

 

If you have the TRRS and have the switch set to balanced, to my ears, the sound should be an improvement not the other way around. 

That's why I think there might be something wrong with my 901 or the balanced amp :/ Oh well, i'll be using the 901 with a tu-05 anyways

post #1375 of 3412
Quote:
Originally Posted by jamato8 View Post

If you have the TRRS and have the switch set to balanced, to my ears, the sound should be an improvement not the other way around. 

Yup agree...

Z, this is probably the first time ever I see the balanced mode sounded worse. Maybe give it a couple days and see if things improve for you. Hope it works out for you else get a replacement as the board could be defective.
post #1376 of 3412
Quote:
Originally Posted by zachchen1996 View Post

Im using the hidition nt6 pro. I only use the balanced amp, and in normal mode it sounds clearer and better than when the amp is in balanced mode. I think something might be seriously wrong with my 901 or the amp?
Is there any chance that the conectors on the iems are inverted? Are you sure that the adaptor is completely inserted / properly conected? It seems obvious but it's better double check before returning the card or the player.
Edited by fermelom - 9/22/13 at 1:49am
post #1377 of 3412
Exactly. Check the adapter. There might be a little short or something that would cause degraded sound quality.
post #1378 of 3412

Just contacted hifiman's customer service team. Hopefully they can fix this.

post #1379 of 3412

How is the DAC section compared to others ?

post #1380 of 3412
Thread Starter 
Quote:
Originally Posted by psygeist View Post
 

How is the DAC section compared to others ?

 

Very fine. Great quality sound. 

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