Splitters usually work fine for most analog connections.
INMHO the integrity of the connection is more important than the "quality.". That said AQ makes various topologies. They along with Morrow's are better than cheap Chinese plastic adapters..
RCA splitter
Has anyone experience of using an RCA splitter? I’m going to try bi-amping but my preamp has only one set of RCA outputs. I found this https://cdlnz.com/M22F-HRD but don’t know if it’s the best quality splitter available. Any thoughts / reccomendations please?