MD-XLR4M Adapter: Adapter Cable for using XLR4F terminated dynamic headset with HME BP200 Beltpack, BP300 Beltpack, and WS200 Speaker Station MD-XLR4F Adapter: Adapter Cable for using XLR4M terminated dynamic headset with BP200 Beltpack BP300 Beltpack, and WS200 Speaker Station MD-XLR5F Adapter: Adapter Cable for using XLR5M terminated dynamic headset with BP200 Beltpack BP300 Beltpack, and WS200 Speaker Station