3.5mm Mono Cable (15FT) - 12V Trigger, IR Infrared Sensor Receiver Extension Extender, 3.5mm 1/8" TS Monaural Mini Mono Audio Plug Jack Connector Male to Male Cable Wire Cord - Walmart.com
Vivolink 6.3 mm. mono Jack cable
Stereo to mono converter cable, 50cm
Amazon.com: CableWholesale 1/4 Inch Mono Patch Cable, 6 feet 1/4" Mono Male to 1/4" Mono Male Cord for Electric Instruments (Guitar, Keyboard, Amplifier, Speakers, Synthesizers) : Musical Instruments
Hosa Technology Mono 1/4" Male to 3-Pin XLR Female Cable PXF-120
Hosa Splitter Cable - 3FT 1/4' Mono Male Y Splitter Cable | ShowMeCables.com