Tinned Copper · Salt-Spray Rated

Marine Speaker Wire

Tinned-copper conductors resist salt spray, UV, and high-humidity environments. Built for boats, docks, and marine audio systems.

Shop the collection → Buyer's guide
  • ★ Lifetime warranty
  • ★ Free shipping over $25
  • ★ ETL listed · UL standards

Overview

Why marine wire uses tinned copper

Marine environments are hostile to standard speaker wire in ways that aren't obvious until the connections fail. Salt air doesn't just corrode — it accelerates galvanic corrosion between dissimilar metals at every termination point. Humidity cycles cause bare copper to oxidize and increase resistance. UV destroys standard jacketing within one or two seasons.

GEARit marine speaker wire addresses all three failure modes. The conductors are tinned — a thin, uniform layer of solder alloy fused to every copper strand. Tinning creates a barrier between the copper and the environment, drastically slowing the oxidation and corrosion process. It's the same reason all quality marine electrical wire is tinned.

The jacket uses a marine-grade PVC compound rated for UV exposure, high humidity, and salt spray. The white color reflects rather than absorbs heat, keeping the cable cooler in direct sun on open decks.

Available in 10, 12, 14, and 16 AWG in 50 ft lengths — sized for typical marine stereo installations from compact wakeboard systems to larger tournament-style boat builds.

Two-step picker

Two questions decide the right speaker wire.

How long is the run and how much power the amp pushes. Use the picker, then choose the conductor that fits the budget and the room.

1 Pick the gauge 2 Pick the conductor
1 Step 1 · Pick the gauge

Thicker wire = lower resistance = cleaner power.

Every foot of speaker wire adds a tiny amount of resistance between the amp and the driver. The longer the run and the higher the wattage, the thicker the conductor needs to be to keep voltage drop under 5%.

  • Short runs (<50 ft): 16 AWG is plenty.
  • Most home theaters: 14 AWG sweet spot.
  • Long / high-power runs: step up to 12 or 10 AWG.
Interactive · gauge picker

Tell us the run. We'll size the wire.

5 ft
5 ft50100150200+ ft
Amplifier power per channel
Recommended
14 AWG OFC OFC speaker wire

Short home-theater run — 14 AWG OFC is the sweet spot for 5.1 / 7.1.

Shop 14 AWG OFC
2 Step 2 · Pick the conductor

OFC vs CCA — the single biggest sound-quality decision.

Copper-clad aluminum looks like copper but is mostly aluminum, with roughly 60% more resistance. Over a 50 ft run pushing real wattage, you can measure (and hear) the difference.

Interactive · conductor picker

What are you wiring up?

Pick the scenario that fits and we'll tell you which conductor wins.

Recommended · OFC
OFC — the home-theater standard.

5.1 / 7.1 receivers and longer runs to surrounds reward pure copper. Lower resistance means cleaner dialogue, tighter bass, and full headroom on dynamic scenes.

Shop OFC speaker wire
SPEC
OFC PICK
Oxygen-Free Copper
CCA PICK BUDGET
Copper-Clad Aluminum
Conductor
99.9% pure copper
Aluminum core, copper skin
Resistance vs OFC
Baseline (lowest)
≈ 60% higher
Best run length
Up to 200+ ft
Under 50 ft
Power handling
Any amp, any speaker
Low to mid power
In-wall code
CL2 / CL3 available
Indoor short runs
Recommended for
Home theater · pro · outdoor
Budget DIY · cars

Top picks

Marine Speaker Wire — top picks.

See all speaker wire →

FAQ

Questions buyers actually ask.

Why does marine speaker wire use tinned copper instead of bare copper?
Salt air causes bare copper to oxidize and corrode much faster than it would indoors. The thin layer of tin bonded to each copper strand acts as a barrier against salt, moisture, and humidity, keeping the conductor clean and resistance stable over years of marine use.
Is this wire safe to use on a saltwater boat?
Yes, that is exactly what it is designed for. The tinned OFC conductors and marine-grade PVC jacket are built to handle saltwater spray, high humidity, and direct UV exposure on open decks.
What gauge should I use for my boat's stereo system?
14 AWG covers most marine stereo installs, including runs up to 20 feet to cabin speakers and cockpit speakers at standard head unit power levels. Use 12 AWG for subwoofer connections or runs over 25 feet, and 10 AWG for high-power amplifiers driving multiple speaker zones.
Can I use this wire for a pontoon boat or dock speakers?
Yes. Pontoon boats and dock installations are exactly the environment this wire is built for. The jacket handles extended UV exposure and the tinned conductors resist the corrosion that comes from being near water even when the system is not in use.
Do you offer a warranty on marine speaker wire?
Yes, GEARit marine speaker wire carries a lifetime warranty against defects in materials and workmanship. Contact support@gearit.com if you have any issues and we will take care of it.