Sennheiser Cable Adapter Female 1/4" 6.3mm to Male 1/8" 3.5mm Plug - Audio Equip
Amazon.com: HIXMAN CA803 Convert Adapter for Audio Technica 4-Pin cw-style connector to Compatible with Sennheiser 3.5mm Locking Plug Bodypack Transmitter : Musical Instruments
HIXMAN CA516 Convert Adapter For Sennheiser 3.5mm to Sennheiser Shure WisyCom 3-Pin connector Wireless Bodypack Transmitter - CA516
Sennheiser 6.3mm Female to 3.5mm Male Adapter Cable
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EPOS SENNHEISER Adapterkabel 35 mm auf 25 mm Headset adapter stereo micro jack male to 4 pole mini jack female 1.6 in for Sennheiser SP 20 SP 20 ML - Office Depot