Split your audio signal into two outputs. This compact adapter connects a 1/4 (6.35mm) stereo jack plug to two 1/4 (6.35mm) stereo jack sockets.
Headphone Adapters
Headphone Adapters
[Split Audio Feed to Five Ways Output] - Equipped with 5 1/4 TS/TRS output jacks, this audio splitter distributes a single audio feed in Mono/Stereo
Cubilux 5-Way 1/4 Inch Stereo Audio Splitter Box, Passive Multi 6.35mm Headphone Splitter, 5-Channel Quarter Inch TRS TS Aux Splitter for Guitar
SubZero Duo Podcast Pack at Gear4music
Stereo Jack - Minijack Cable, 1m at Gear4music
Essentials Stereo MiniJack to RCA Phono Cable, 3m at Gear4music
【1/4 stereotrs】 This model only supports stereo input and output, but does not support the ts socket (for example, it does not support the guitar's TS
Stereo Input TRS Jack 1/4 Splitter 4X Micro amp 1 in 4 Out 1/4 inch Headphone Amplifier 4 Channel Audio (Black)
Stereo Jack - Mono Jack(x2) Cable, 1m at Gear4music
recording an old piano with only an aux out (mono or stereo?) - SOS Forum
Vintage 1970s Audio Y Adaptor Stereo Converter Headphone Splitter 1/4 jack plug