Pls have a look a this Balanced Ampli :http://www.raysamuelsaudio.com/products/sr-71b It looks quite good.

Or a Fully Balanced Ampli such the rsa audio SR-71B : http://www.raysamuelsaudio.com/products/sr-71b. Of course a much expensive option. Where i can buy the TRRS Connector that do you recommend ?   Thanks

Any one know of Headphones with Balanced Jack ??

So,using the HiFiMAN 801 + GAME Card and the FiiO E12,Also By Pass the Game Card,,no? 

Hi Fermelon, after days earinf the 901+Balanced Card,using The Grado 225i Headphones and comparing to my H.M 801 + fIIo E12 Mont Blanc, Ampli, I must admit that the 901 Balanced has a much better sound . So if the HM-901 Line out Dock Cable will bypass the Balanced Card,I will not use.

Hi Lieon, the Customers Service said that i can use their HM-901 Line out Dock Cable.  http://head-direct.com/Products/?act=detail&id=171

I just received my New H.F.MAN 901+Balanced Card. I cant see any Connector to use my FiiO E12 Mont Blanc External Amplifier ! so the Double 3,5 cable can not be used !

Finally my HiFiMAN 801 is not dead.The Support Team told me to charge for 8-9 hours,what a did,and voila! working again. The worst is that in the  time i order the new HiFiMAN 901+Balanced card...   Thanks

Thanks for your reply,maybe the Fiio E12 is not the reason.It can be that the HiFiMAN 801 Battery is gone or the Ampli card. Do you believe that i can use without any risk the FiiO E 12 connected to the new HiFiMAN 901 ?

I just buyed one and star using connected to HiFiMAN 801 with the Game Card. After 10 days THE HIFIMAN 801  is DEAD. I do´nt konow if is pure coincidence ,the Amplifier Card is Gone or the Main 801 Battery is Dead. I jus order the New HiFiMAN 901 with the Balaced Card and i Fearful to connect...

All that i play is FLAC 24-96,without a problem,normally,suddenly plays really bad some recordings 

Hi,do you know if the HiFiMan HM 801 can play the 24-bit / 174 Khz version ?   Thanks condegun

Using the San Disk Extreme32GB Class 10, i had problems,Faulty reproduction of the Record :Le Quatttro Stagione,form Vivaldi,Salvatore Accardo Orchestra da Camera Italiana that i bought from a Online Store in USA.Then i bought exactly rhe same Concert from a differente Store in Europe and i...

Hi Theodore,right now i´m Testing again the San Disk Exteme 32GB,Class10.And i found that with WAV Ripped in the Computer is OK,FLAC Ripped with EAC is OK,FLAC 24-48 is OK. I´m having Problems Only with some FLAC 24-96 Bought on line.   I will follow the Tests and i will let you know,but we...

Brand--Kingston Speed Class-- 4 Size-- 32GB Compatible--No Firmware Version/Date--0.19 Comments--NO COMPATIBLE,the worst that i  try till now Is not normal that a Device like the HiFi MAN 801,only accepts very few Cards.They Must choose themselves the right Card and make all the Tests...