The easiest way to connect the audio output of your computer is to use the line output of your sound card.
Cable to connect amp to computer.
You can connect a preamp or headphone amp to your computer via the headphone or line out jack.
Connecting to a computer analog.
You need one pair of speaker cables for each speaker in your home theater.
All amplifiers and receivers have several pairs of rca jacks and you generally connect a computer to the aux pair.
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The easiest method is to use a cable that has a 1 8 headphone jack at one end to connect to your computer and a pair of rca plugs at the other to connect to your amplifier or receiver.
Speaker cables connect the outputs of the power amplifier or the amplifier section of the receiver to the speaker.
A step by step guide that shows you how to connect your guitar to your computer and quickly set up a simple home recording interface.