1/4" Stereo Audio Jack Plug Adapter Single Male To Female 6.35mm Dual Mono Stereo Jack Headphone Microphone Y Splitter Converter - Audio & Video Cables - AliExpress
3.5mm Mono Plug to 2x3.5mm Stereo Jack Adapter
Amazon.com: tisino 1/4 Mono to 3.5mm Stereo Adapter, Gold Plated 6.35mm TS Male to 1/8 inch TRS Female Audio Connector - Black, 1 Pack : Electronics
$4.99 - Female Stereo to Dual Mono Male 1/8" Adapter - Tinkersphere
Stereo to Mono Adapter
Kentek RCA mono male to RCA RW female M/F Y adapter converter connector for audio stereo TV system - Walmart.com
3.5mm Stereo Male to Mono RCA Stereo Male Adapter Cable - Micro Connectors, Inc.
Amazon.com: 3.5mm Stereo to Mono Adapter, 2 Pack 3.5mm 1/8" TRS Stereo Male Plug to 3.5mm 1/8" Mono Female Jack : Electronics
Stereo to mono converter cable, 50cm
C2G 40634 3.5mm Stereo Male to 3.5mm Mono Female Adapter, TAA Compliant, Silver
Mono-to-Stereo 3.5mm 2-Conductor to 3-Cond Adapter
MONACOR SMC-1 Stereo-Mono-Converter
3.5mm Stereo to Dual Mono Cable, 6inch 1/8" TRS Male to 2 TS Mono Female Adapter Gold-Plated Connector Audio Y Splitter Cord for Headphone, Speaker
Amazon.com: Disino 1/4 Mono to 3.5mm Stereo Adapter, Gold Plated 6.35mm TS Male Plug to 1/8 inch TRS Female Audio Connector - 2 Pack : Electronics
Stereo to Mono Adapter for Most KEF Ci Speakers Silver CITR-SM - Best Buy
2-Cond Mono female Jack to 3-Cond Male Plug Stereo Adapter
Stereo to BTL Converter Adapter. Make any stereo to Bridge Mono Phase Control-2 | eBay
Switchcraft AudioStix Stereo 3.5mm Female to Balanced Mono 318
3.5mm Stereo Jack to 3.5mm Mono Plug Adapter - HamiltonBuhl