Instrument Cable article
Instrument Cable for Beginners: A Complete Guide
An instrument cable is the first piece of kit a new guitarist needs alongside the instrument and amp. Here's everything you need to know.
If you've just bought an electric guitar, bass or keyboard, you need an instrument cable to connect it to an amp or audio interface. They're simple, but there are a few things worth knowing to avoid buying the wrong type or letting a failing cable disrupt your practice.
What It Is and What It Does
An instrument cable carries the audio signal from your instrument to the next piece of equipment in your chain — typically an amp, an audio interface, or a pedalboard. It uses a 6.35mm (quarter-inch) jack plug at each end and an unbalanced TS (tip-sleeve) connection: one conductor carries the signal, the other is the ground and shield combined.
This is different from a microphone cable (which uses XLR connectors and a balanced connection) or a speaker cable (which uses the same jack but carries a different type of signal at much higher power). Don't use speaker cables as instrument cables — they look similar but behave very differently.
Choosing Your First Cable
For a beginner, a mid-range instrument cable from a recognisable brand is the right first purchase. At £15–£30, cables from D'Addario Planet Waves, Fender or Roland offer Neutrik-quality connectors and reliable construction that will last several years of regular practice.
Avoid very cheap cables (under £8). They work, but the connectors fail quickly with repeated plugging and unplugging, and intermittent crackle mid-practice is distracting. Spending £20 on a reliable cable once is better than buying three £6 cables over the same period.
For length, 3 metres handles most home setups. If you practice in a larger room with the amp against a far wall, get 5 metres. Longer than that adds unnecessary capacitance.
Connecting It Up
- Turn the amp volume down or to zero before connecting the instrument cable — this prevents a loud pop when the jack makes contact
- Plug one end into the guitar or instrument output jack
- Plug the other end into the amp's input (typically labelled "Input" or "Guitar In")
- Turn the amp on and bring the volume up gradually
- Play a note to confirm signal is getting through
Common Problems and What They Mean
Crackle when you move the cable: a failing connector joint. The solder connection inside the jack plug has cracked or the tip contact has worn. Replace the cable.
Hum or buzz that doesn't go away: could be the cable (try a different one) or a ground loop between connected equipment. Plugging everything into the same mains socket can help; a hum eliminator pedal fixes persistent ground loop issues.
No signal at all: check the cable first by swapping it. Then check that the amp is set to the correct input channel and that the guitar's output jack socket is clean and making good contact.
For a more detailed look at how cables work and what the technical specifications mean, the instrument cable explainer covers capacitance, shielding and connector types clearly.
Comments