Tara Labs and AudioQuest both have hard-y addaptors that work well and are not expensive.
Using Y-adapter to duplicate preamplifier outputs
Is there any loss from using y-adapters to duplicate an output on an amplifier? Case in point; I want to duplicate my preamp output to feed a ss amplifier and a tube amplifier. Both will not be used simultaneously. I just don't want the hassle of having to remove interconnects each time I am going to use one amp or the other.