but it depends if the amp aux in is mono or stereo, if the latter the pictured lead is okThe amp I saw a mono amp, for a 1/4". Guitar lead.
The lead shown is a stereo plug which can work but ideally you want a L&R phono/rca to a single 1/4" mono jack.
https://www.amazon.co.uk/MainCore-SCREENED-Splitter-Adapter-Available/dp/B07BJM3D4Q/ref=sr_1_6?adgrpid=52047507806&dchild=1&gclid=EAIaIQobChMIzvbe556T8gIVDdTtCh1qmwCzEAAYASAAEgIaDvD_BwE&hvadid=259062422623&hvdev=t&hvlocphy=1007247&hvnetw=g&hvqmt=b&hvrand=10725785789167453624&hvtargid=kwd-370431930877&hydadcr=5056_1827808&keywords=1/4+jack+to+rca&qid=1627938325&sr=8-6
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