3.5mm Mono Right Angle, 1/8" Mono Male to Mono Female 90 Degree Adapter Connector Plug for 3.5mm Mono Audio Extension Cable (2-Pack)
Changing Mono Mics into Stereo with RCA cables by Chung Dha - YouTube
Monacor Stereo/Mono-Konverter (1 x RCA L/R auf 2 x Cinch MONO) : Amazon.de
InLine® Audio Adapter 6.3mm jack male mono to 2x RCA female | Jack -> RCA | Adapter / Converter | Product Overview | INTOS ELECTRONIC AG - Online Store
RCA to 1/4 TRS Adapter - General Adapters | Hosa Cables
MONACOR SMC-1 Stereo-Mono-Converter
2x RCA Cinch auf 3.5mm Klinke Jack Female Buchse Kabel Adapter VITALCO Premium 5903802601008 | eBay