I am more than convinced that the connection box will not be heard if you wish to add it, nobody here is 20 years old and fresh ears to notice it.
Otherwise all the cables of the Sme should be replaced obtaining a direct line from the head to the phono preamp without joints. LoL
Otherwise all the cables of the Sme should be replaced obtaining a direct line from the head to the phono preamp without joints. LoL