HE-Adapter is a device to protect amplifiers and headphones when using a speaker amplifier to drive HE-6, HE-5LE and HE-4 headphones.
HE-Adapter is not for any high or average efficiency headphones, such as HE-300 and HE-500.
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