Are high-quality audio cables really worth the extra cost?

Back in the day, say the mid-1970s, audio cables were simply called "speaker wires," and nobody paid much attention to them. A stereo store clerk might toss in a bundle of basic twisted copper, plastic-coated wires as a freebie after convincing you to spend all your cash on some extravagant quadraphonic speakers. The real excitement was cranking up the latest Foghat or Aerosmith album at ear-splitting volumes, while the speaker wire just sat there, unremarkable.

But times have changed. Nowadays, walk into a major electronics store or browse a home audio site, and you'll be told that without premium audio cables, your high-end digital gear will sound awful. Premium cables typically run between $20 to $35, but if you're an audiophile trying to show off, you could easily drop as much as rapper Gucci Mane spends on gold-and-diamond jewelry. OK, that's an exaggeration, but only just. Pear Audio, for example, offers ANJOU cables, which claim to provide the best speaker-to-amplifier connection possible, priced at $7,250 for a 12-foot pair [source: Pear Audio].

While some audiophiles swear by high-end audio cables to deliver perfect sound quality, others dismiss them as nothing more than a marketing gimmick, much like Vanilla Ice's career. Do they really improve your music experience, or just your credit card bill?

How Audio Cables Transmit Sound

In simple terms, when your stereo or home theater system plays music, it extracts digital data from a medium like a CD, converts it into an electrical signal, and sends it to the speakers. The speakers have cones that vibrate in response to the electrical fluctuations, creating the sound of a fiery guitar solo by Jack White or the soothing vocals of Adele. This is where audio cables come into play — they provide the necessary connection and pathway for transmitting the signal.

At the heart of every audio cable is a collection of twisted metal strands, usually copper, that can carry an electrical signal. The cable is encased in a plastic jacket for insulation, and premium cables often feature extra shielding to protect against interference from radio waves or other electromagnetic sources. Back in the day, speakers required manual stripping of the wire's insulation for connection, but today’s cables come with pin or plug connectors for a cleaner setup [sources: Procosound.com, Schaub].

Ideally, a cable would transmit electrical signals flawlessly, but in reality, the metal in speaker wires creates some resistance, meaning not all the electricity gets through. This results in sound that's less faithful to the original recording. The longer the wire, the greater the resistance. To combat this, using a thicker wire gauge can help improve the transmission of electricity. A wire's thickness can be determined by its American Wire Gauge (AWG) number — the lower the number, the thicker the wire. For distances under 80 feet (24.4 meters), a 16-gauge wire is usually sufficient [source: Home Depot].

Do high-end cables actually make a difference?

Audio cable makers and some critics argue that if you don’t choose your cables with great care and invest properly, you’re doing a disservice to your ears. However, many audiophiles and skeptics claim that the difference between cheap and expensive cables is negligible, except for the price. James Randi, the magician-turned-skeptic, even offered $1 million to anyone who could prove that Pear Audio's ANJOU cables sound better than a cheaper option [source: Randi]. One cheeky online audio reviewer even suggested he could achieve the same sound quality with just some bent coat hangers [source: Becker].

On the side of premium cable advocates, Gizmodo's Wilson Rothman points to studies suggesting that high-end cables might actually preserve audio signal quality better than their budget counterparts. Premium cables often contain exceptionally pure copper or silver, and sometimes even rare materials like palladium, which offer better conductivity. These cables may also feature design enhancements, such as built-in filters to block low-frequency noise that shouldn't be in the music [source: Rothman].

The real question is whether you can actually perceive the differences highlighted by those impressive specs. According to CNet’s audio expert Steve Guttenberg, the truth lies somewhere in the middle. If you're a dedicated audiophile with high-end speakers, you may indeed notice a more precise and cleaner sound with premium audio cables. However, for those with less discerning ears, the choice of cable might not make enough of a difference to justify the cost. "It's like asking whether you need to spend $50 or $100 on a good bottle of wine," he writes. "No, unless you're a wine expert; most people are perfectly content with a nice $10 bottle" [source: Guttenberg].

How to Choose the Right Cables for Your Audio Needs

While you don't need to spend a fortune to get top-notch sound, opting for high-quality audio cables could improve how your stereo system performs. The challenge is, while you can go to a store and test different speaker sets to compare their sound, the salesperson is unlikely to allow you to test the same speakers with various cable brands. This means you'll have to rely on the specs. The good news is, these straightforward tips can help you select cables that fit your budget and still deliver solid sound.

But don’t worry too much. As Audioholics reviewer Gene DellaSala points out, a standard OFMC cable with an AWG of 10 to 12 will work well for most home setups, unless you're wiring a Bat Cave or the Palace of Versailles [source: DellaSala]. If you're stretching cables over long distances, you'll need specialized options. Likewise, if you’re routing cables behind walls or under the floor, choose cables designed for that specific purpose. Check for a UL certification of CL2 or CL3 on the label [source: Home Depot].