[Nankai]

http://www.head-direct.com/product_detail.php?p=104
 
Using a speaker amplifier to drive HE-6, HE-5LE and HE-4 headphones.
Input: Speaker Connector
output: 4 pin XLR
Resistors in parallel: 10 Ohm
Resistors in series: 25 Ohm
Size: 16.5 cm * 12.2 cm * 7.5 cm or 6.5 inch * 4.8 inch * 2.9 inch
Weight: 542 g or 1.2 lb
 HE-Adapter is not for HE-500 or any high efficiency headphones. 
 

 

 

[hawkhead]

I have the HE6 and driving them with a 100W dual mono Primare amp
 
Why is this box needed ?

 

[.Sup]

Quote:

I have the HE6 and driving them with a 100W dual mono Primare amp
 
Why is this box needed ?

so you don't need to have a separate cable or cable adapter and you can use the stock cable with it. 

 

[hawkhead]

Sorry that does not make any sense, cables are much cheaper

 

[TheWuss]

it's for the resistors. 

 

[tzjin]

Reviving an old thread.

Sorry what do the resistors do? Could I just terminate 4 cables with a 4-pin XLR, and have RCA jacks on the other end?