Cordial Y Adapter Stereo 1/8 TRS Plug to L/R mono RCA Black CFY3WCC - Best Buy
Single Stereo to Mono Converter, rca audio stereo to mono adapter summing box
6.3 mm. Jack - Phono RCA stereo audio cable pair
Sweetfoot Stereo to Mono RCA Switch | Steve Hoffman Music Forums
1 RCA Male Mono to 2 RCA Female Stereo Audio Splitter A/V Y Cable Lead | eBay
How to...Connecting stereo outputs to mono input
Galaxy Audio JIB/R RCA Combiner | Stereo to Mono Converter
0.5ft (0.15m) Velocity™ Two RCA Stereo Male to One RCA Mono Female Y-Cable | Audio Adapters and Couplers | Adapters and Couplers | Audio Video
C2G Value Series 6in Value Series One RCA Mono Male to Two RCA Stereo Male Y-Cable | www.shi.com
RCA Y Cable - RCA Mono Male to Two RCA Stereo Female - Dedicated Audio
5 Pack 2x RCA Stereo Converter to 3.5mm Mono by Keple, Audio Adapter, Y Splitter, 3.5mm One Ring Male Jack Plug to 2 x RCA Phono Female Connection | Keple.com
Amazon.com: C2G Value Series One RCA Mono Male to Two RCA Stereo Female Y-Cable, Black (6 Inches) - 03177 : Electronics
Y Adapter - Stereo 1/4“ TRS Plug to L/R mono RCA - 10-Foot Black Cable Cordial Essentials Series (3719851) by Hal Leonard
0.5ft (0.15m) Value Series™ One RCA Mono Male to Two RCA Stereo Male Y-Cable | Audio Adapters and Couplers | Adapters and Couplers | Audio Video