The signal is traveling out of your amp to some other destination, such as a PA system or recording gear.ДЇor those of you who have a head/cab rig, the speaker jacks on the back of the head are outputs they send the amplified signal out to the cabinet. Similarly, the вЂњline outвЂќ jack on the back of your amp is just that-an output. The signal from your mp3 player, CD player or other outboard devices is traveling into the amp. The вЂњaux inвЂќ jack on your amp, however, is just that-an input. A signal is traveling out of the amp and into the headphones. If you can connect headphones to your amp, then your amp has a headphone output. ItвЂ™s where the signal comes in from the instrument.Дoes your amp have a headphone input? No, it doesnвЂ™t. So, the jack on your amp where you plug in the other end of that cable? That is an input. Where is the signal going? Follow the signal path-the signal is traveling out of your guitar or bass to the amp. The key to knowing the difference is understanding the signal path, or the direction in which the signal is traveling. The jack on your guitar or bass where you plug the cable in-the one youвЂ™ve been calling an input jack all this time-is actually an output jack. For example, the jack on your guitar or bass is where you plug in the cable, so itвЂ™s common to refer to it as the input jack. Plugging things in is where the terminology can get confusing. Curious about the ins and outs of inputs and outputs? If that sounds like nothing but a tongue-twister to you-consider that the two terms are often interchanged mistakenly in reference to both instruments and amps.

Two audio outputs into one input