When it comes to vinyl playback crosstalk isnt all that good ,but Id say it adds to the atmosphere on certain program material .Its one of the reasons a cd copy of the Beatles just doesnt sound the same as vinyl.
Maybe a good plan is to double up on the decoupling ,in other words whatever your dropper resistor is, divide it by 2 then add an extra RC stage ,same cap, half the resistance value ,so the voltage drop remains the same. Even in mono high gain systems this strategy decreases any tendency to motorboating due to feedback via the power supply ,capacitive coupling is trickier to deal with ,but less of an issue due to it tending to increase with frequency.
Maybe a good plan is to double up on the decoupling ,in other words whatever your dropper resistor is, divide it by 2 then add an extra RC stage ,same cap, half the resistance value ,so the voltage drop remains the same. Even in mono high gain systems this strategy decreases any tendency to motorboating due to feedback via the power supply ,capacitive coupling is trickier to deal with ,but less of an issue due to it tending to increase with frequency.