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I want to send a line-level signal (coming out of a DAC) to 2 devices, both of which will be working at the same time. Can I split the line-level signal with a simple Y splitter? The actual set up involves sending this signal to two "External in" channels in a PreSonus HP60.

Here's a simple wiring diagram with the idea. enter image description here

Or would an ABY box/dedicated splitter box be beneficial? Thanks!

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  • By splitting it passively you might a have little drop in signal strength (and in some cases crosstalk) but I would try just it out and judge from there.
    – htor
    Nov 2, 2023 at 11:25
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    Why do you need to? I can't think of any reason to do this. You're trying to double-input to a device that already has per-headphone mixing. It just feels like an XY Problem Please ask us about the actual problem you are trying to solve, rather than how to implement your assumed solution.
    – Tetsujin
    Nov 2, 2023 at 18:18
  • He said in the text that 2 devices will be connected. The picture is just for reference, and shows only one device, but thats not what he is doing :)
    – flohack
    Nov 29, 2023 at 15:22

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I suggest you put some resistors here just to be on the safe side, like this:

L_IN1<------|2k|------+------<L_OUT
L_IN2<------|2k|------+

R_IN1<------|2k|------+------<R_OUT
R_IN2<------|2k|------+

Adding 2 resistors here is mainly for electrical protection of all 3 devices, but will not influence the sound itself. Other than that its just smth that works :)

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