You cannot pair the iStream Bluetooth Audio Receiver with Attached Cable (AIS01F) or the iStream Bluetooth Audio Receiver (AIS11F) to your headphones because your headphones are also a receiver. You cannot pair two receivers together, one of the devices must be a transmitter. The purpose of the AIS01F is to receive an audio stream from a Bluetooth audio source such as a smartphone.
If you require a Bluetooth Transmitter, please see our product page linked below.
Aluratek Bluetooth Transmitters / Receivers