Premier Guitar features affiliate links to help support our content. We may earn a commission on any affiliated purchases.

What’s the Buzz with Balanced and Unbalanced Cables

What’s the Buzz with Balanced and Unbalanced Cables

From left to right: a 1/4" tip-sleeve instrument and speaker cable, a 1/4" tip-ring-sleeve headphone cable, an XLR, two RCA, and a 3.5 mm tip-ring-sleeve headphone cable.

Learning the differences between various cables can greatly improve the quality of your recordings.

Hello, and welcome to another Dojo session! This time I’d like to drill down to some audio bedrock and unearth the differences between balanced and unbalanced cables. I want to help you understand the differences and give you some strategies to greatly reduce noise (hums, buzzes, and static) in your recordings. Tighten up, the Dojo is now open.

There are many different connection types and gauges of balanced and unbalanced audio cables, and both are used to transmit audio signals from one device to another. However, they differ in their construction and performance, and understanding these differences is essential for achieving optimal audio quality.


Tipping the Scales

Unbalanced audio cables are the most common type of cable used in consumer audio equipment. This includes our beloved 1/4" TS (tip-sleeve) instrument and speaker cables, RCA, and TRS (tip-ring-sleeve) 3.5 mm and 1/4" headphone cables. The first two kinds of cables consist of two wires—a signal wire and a ground wire, while the headphone cables are in stereo, with three wires: left, right, and ground. Signal wires carry the audio signal, while the ground wire acts as a reference point. At the cable’s end, the tip (and in the case of headphone cables, the ring) of the plug carries the signal, while the sleeve is the ground connection.

Unbalanced cables are very limited in the distance they can transmit audio signals cleanly (preferably less than 20 feet). The longer the cable, the less high frequencies, and the more susceptible it is to noise and interference from external sources—like electromagnetic fields created by other electronic devices nearby (amps, synths, drum machines, outboard gear, cell phones, computers, televisions, etc.) and radio frequency interference.

Balancing the Scales

Balanced audio cables, on the other hand, which include XLR and balanced 1/4" TRS types of connectors, are designed to reduce interference and improve audio quality. They always consist of three wires—two signal wires and a ground wire. Note that while some unbalanced cables have three wires, the two signal wires in balanced cables carry the same audio signal, with one flipped 180 degrees out of phase, making them balanced mono as opposed to unbalanced stereo. Balanced cables are ideal for use in recording studios and live sound because they are capable of transmitting audio signals over longer distances (several hundred feet) without introducing noise or hum.

How? Without getting too technical, when the audio signal is split into two separate, identical paths across the two signal wires (with one being out of phase), and then recombined in phase once again, the resultant signal is amplified, and any noise that was present is canceled out. This includes 60 Hz buzz, hum (ground loops), white noise (thermal sound), digital clock jitter, and more.

They Look the Same, but Are They?

One mistake that’s easy to make is to confuse an unbalanced stereo headphone cable with a balanced mono TRS cable, as they both look the same and both have three wires. But if you tried to connect your unbalanced stereo cable output from your smartphone or tablet to a balanced input of a mixer, anything from the center of the stereo field (most likely the main vocals, kick, snare, and bass instruments) will be canceled, because the balanced input will sum both the left and right from the stereo cable, and anything common to both will be 180 degrees out of phase. Essentially, the balanced input will treat the center image as “noise” and remove it.

Can I Convert Balanced Into Unbalanced and Vice Versa?

Yes, you can, and that’s exactly what DI (direct injection) boxes and reamp boxes do. A DI box will convert unbalanced instrument level signals to balanced line level signals and reamp boxes do the opposite—balanced line levels to unbalanced instrument levels. If you’re unfamiliar with these devices and how they work, check out my Dojo video on how to reamp your guitar.

How to Reamp Your Guitar | Recording Dojo

Until next time, namaste and keep making your music!

Handcrafted in the Seymour Duncan Custom Shop, each set includes gray bottom flatwork and a pad-printed signature from Joe. The first 500 sets will be aged, packaged in limited edition boxes, and include a certificate of authenticity.

Read MoreShow less

Killswitch Engage are, from left to right, Justin Foley on drums, guitarist Adam Dutkiewicz, vocalist Jesse Leach, bassist Mike D’Antonio, and guitarist Joel Stroetzel.

The metalcore pioneers return with an album for the times, This Consequence, that explores division, war, and other modern-day troubles to the tune of the band’s tandem guitar duo’s brutal, lockstep riff-ery.

“We don’t consider ourselves politicians or into politics by any means, but the sense of national unrest, and the unwillingness to work together, it’s really grated on us,” admits Killswitch Engage guitarist/producer Adam Dutkiewicz (Adam D, professionally). “It’s manifested itself into the songs and lyrics.”

Read MoreShow less

The Spirit Fall trio: drummer Brian Blade (right) and saxophonist Chris Potter (center) joined Patitucci (left) for a single day at The Bunker. “Those guys are scary. It almost puts pressure on me, how good they are, because they get it really fast,” says Patitucci.

Photo by Sachi Sato

Legendary bassist John Patitucci continues to explore the sound of a chord-less trio that balances melodicism with boundless harmonic freedom—and shares lessons he learned from his mentors Chick Corea and Wayne Shorter.

In 1959, Miles Davis’ Kind of Blue and John Coltrane’s Giant Stepstwo of the most influential albums in jazz history—were recorded. It’s somewhat poetic that four-time Grammy-winning jazz bass icon John Patitucci was born that same year. In addition to a storied career as a bandleader, Patitucci cemented his legacy through his lengthy association with two giants of jazz: keyboardist Chick Corea, with whom Patitucci enjoyed a 10-year tenure as an original member of his Elektric and Akoustic bands, and saxophonist Wayne Shorter’s quartet, of which he was a core member for 20 years. Patitucci has also worked with a who’s who of jazz elites like Herbie Hancock, McCoy Tyner, Dizzy Gillespie, and Michael Brecker.

Read MoreShow less

Whitman Audio introduces the Decoherence Drive and Wave Collapse Fuzz, two innovative guitar pedals designed to push the boundaries of sound exploration. With unique features like cascading gain stages and vintage silicon transistor fuzz, these pedals offer musicians a new path to sonic creativity.

Read MoreShow less