Mono audio cable for Phono RCA to mono Jack (6.3 mm), for example, between the mixer and amplifier or other PA equipment.
Your essential guide to audio/video cables and connectors - Videomaker
HIFI 2 RCA To Dual XLR Audio Cable 2 RCA Male to 2 XLR Female For Microphone Subwoofer Mixer Recording Studios Cable - AliExpress
6.35mm TS Mono Male to RCA/Phono Speaker Mixer Audio AUX Connector Adapter Cable
Gold Plated 3.5mm (1/8) 4 pole Right Angle Male to Male Stereo Audio Cable 6ft
Musical Fidelity M6X DAC - Digital to Analog Converter
6.3 mm. Jack - RCA mono audio cable pair
Musical Fidelity M6X Digital to Analog Converter / Headphone Amplifier - AV Luxury Group
Which is the ground wire in an RCA cable? - Quora
(1) Stereo 1/4in (6.3mm) Jack Plug (2) RCA Jack Plug(s) (Left and Right) Fully molded and shielded to prevent EMI/RFI interference Nickel-Plated 1/4in
CablesOnline 6ft TRS 1/4in(6.35mm) Stereo Male to 2-RCA Male Professional Audio Cable, with Rubber Strain Relief (AV-YR206G)
1x 3.5mm Female Stereo to Dual 6.35mm Mono Male Audio Socket Adapter Cable Black
6.35mm TS Mono Male to RCA/Phono Speaker Mixer Audio AUX Connector Adapter Cable
6' 3.5 mm Mono Mini Jack Plug to Single RCA Plug AV Cable