how to connect 2 amplifiers together sorted by

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I learned this lesson the hard way! Anything that can be hooked-up wrong, will be.

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Please note that most of the software linked on this forum is likely to be safe to use.

Voodoo Labs , having both amps plugged into the same power outlet etc.

A wye-connector used to split a signal into two lines is being used properly; a wye-connector used to mix two signals into one is being abused and may even damage the equipment involved.

The left Y-Splitter should be connected to both the left inputs of Amp A and Amp B.

CY Hi Rafal, Now that I know what you meant by a Y-splitter, I just want to make sure that, if the source is a CD player, then I would need to have one Y-splitter for each of the RCA outputs Left and Right.

Switch 3: 1 input, 2 outputs this one can be ready made if all your amps can handle common ground and more than one set of speakers connected at the same time.

If you have other audio components, you can also ground them from the power block.

It might have little or no effect for example volume drop that can be easily corrected, you have to match volume of both amps anyway , but it might also alter the sound enough to make the amp sound worse.