The D'Addario PW-P47T is a 1/4-inch female stereo adaptor.
Link AA7Y 1/4" Male to 2 RCA Female Cable
Link AA22Y 1/8" Male to 2 1/8" Female Cable
Link AA26Y 1/4" TRS to 2 1/4" Female
Hosa Y-Cable Mono 1/4'' TS (M) to Dual 1/4'' TSF (F)
Digiflex HKP Performance Series 1/8" to 1/4" Cable (3')