Jack plugs and jack cables are essential for hooking up musical instruments and gear like headphones and, while smartphones and tablets have only increased the popularity of jack cables, not every jack cable is the same. There are differences in diameter and length; male and female plugs; straight and right-angled plugs; mono and stereo plugs; full-size plugs and mini-jack plugs; etcetera. Whatever you need or whatever plug-to-port compatibility issue you have, there's a jack cable or jack adapter for it.
If Your Jack Cable Doesn't Fit, Try a Mono or Stereo Adapter Cable
If you've got a 6.35mm jack cable and a device equipped with a 3.5mm mini-jack port, plugging in won't be possible without the right adapter cable. In this case, you'd need a jack cable fitted with a 3.5mm male mini-jack plug on one end and a 6.35mm jack on the other. There are all kinds of adapter cables as well as separate plug adapters available, including stereo (TRS) to mono (TS) cables and plugs. If the cable you have is long enough but incompatible plug-wise, an adapter plug in the form of a tiny metal or plastic unit finished with specific plugs on either end will do. In other cases, an actual adapter cable like a jack-to-jack extension cable might be the more practical solution. See All Adapter Plugs and Cables for the rest of our extensive range.
Jack Extension Cables
Jack extension cables feature a male plug at one end and a female plug at the other and can be used to lengthen any jack lead that comes up short. If you happen to have two jack cables, you can also link them up with a jack-to-jack adapter to create one long jack lead. That said, it's best to keep the use of adapters to a minimum since they form an extra link in the signal path, increasing the risk of loss in signal quality and interference. So, if you're forced to be resourceful, make sure to use an adapter cable instead of an adapter plug whenever possible.
Jack Splitter Plugs: 3.5mm Mini-Jack or 6.35mm Jack
There's a special type of jack we don't want to leave unmentioned: the jack splitter. This signal splitting adapter generally comes in the form of a plug or short cable finished with a male jack or mini-jack plug on one end and two female jack or mini-jack plugs on the other, making it perfect for 'doubling' your headphone port and allowing someone else to plug in their headphones as well so you can both listen to the same music played with a single smartphone. Jack splitters also come in handy when you want to send the audio signal of something like a digital piano to your headphones and a recorder at the same time.
