If you don't need switching between different amplifiers you can simply use TRS to RCA cable. You can also add a Y-splitter to feed the signal to two or more amplifiers simultaneously.
Mobile output is for headphones, so low impedance.
And actually you can go with TRSS->RCA or TRS->RCA cables I think, assuming the mobile phone has a 3.5mm output jack.
And actually you can go with TRSS->RCA or TRS->RCA cables I think, assuming the mobile phone has a 3.5mm output jack.
are all the amp inputs the same? i'm not opposed to Y splits but the wrong combination of loads/ input terminations can have consequences....i guess it's part of the learning process...discovering why isolated/buffered feeds are important when attempting to daisy chain a signal source.
If they are 10k inputs, hanging more than 312 of them on one 32 ohm output may distort.
If many of them are higher impedance, you can do more.
Nearly every signal source is at least 1/10 of the impedance of nearly every load. And often the ratio is even greater, like 1/100.
Daisy-chaining is essentially a huge Y cord.
There is a point to buffered and isolated outputs, particularly in some automotive applications, or others where long cable runs are involved, or there are significant differences in ground potential (where you'll need a whole other kind of isolation). Usually not required though. Y cords work fine. The "wrong combination of loads" would be something like a dead short (takes out the signal to all destinations at once), or something with 1000' of cable in between. Or something else that's just plain built broken.
Isolation is much more important in preventing disease spread.
I would suggest to wait for the OP response before we go further with the impedance matching and such. Maybe he does not need all this information...
We have to remember that some legacy and boutique hi-fi components can present a nasty load at their inputs when their power is turned off.