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Monoprice 100644 6ft Audio Stereo Cable — main product image
Monoprice 100644 6ft Audio Stereo Cable
Monoprice 100644 6ft Audio Stereo Cable
Monoprice 100644 6ft Audio Stereo Cable
Monoprice

Monoprice 100644 6ft Audio Stereo Cable

★★★★★4.6 (1586 reviews)
8 inch

Six feet of clean stereo signal — Monoprice's 3.5mm TRS cable solves the last-foot connection problem between any two audio devices reliably and affordably.

$4.98*
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Monoprice 100644 is a 6-foot, 3.5mm TRS stereo cable — a product category where the spec sheet is short and the only real question is whether the build quality matches the price. Here, it does. The TRS wiring on both ends carries a full stereo signal, so left and right channels arrive at the destination intact. The molded connector housings prevent the plug bodies from cracking under lateral stress, and the strain relief boots — the detail that separates a cable that lasts from one that fails at the plug after six months — are present at both ends. For the most common audio connection scenario (phone, laptop, or portable player to a car stereo, desktop speaker, or receiver), this cable gets the signal where it needs to go cleanly and without introducing noise.

The practical use case is unambiguous: two devices with 3.5mm stereo jacks that need to talk to each other. That covers an enormous range of everyday connections — streaming audio from a laptop to a studio monitor with an aux input, running a phone through a car stereo, connecting a portable DAC to a headphone amplifier, or bridging a mixer's headphone output to a recorder. At 6 feet, the cable has enough length to route neatly in a desktop setup without pooling excess on the desk. It isn't a touring cable or a high-flex mobile cable, but for stationary or semi-permanent connections, the PVC jacket and solid construction make it a reliable, low-maintenance choice that won't need replacing any time soon.

Key Features

This cable features a male 3.5mm stereo (TRS) plug on each end with molded connector housings and strain relief boots.

The cable is ideal for connecting a stereo audio output such as an mp3 player or phone to a stereo audio input such as the auxiliary input on a car stereo system.

The 3.5mm (1/8 inch) stereo TRS connector is more commonly known as the headphone jack on portable mp3 players and mobile phones.

Quality at a Fair Price: Monoprice's rugged design and rigid quality control standards deliver high quality products at fair prices.

Specifications

Cable Length
6 feet
Connector Type
3.5mm (1/8") stereo TRS, male to male
Number of Conductors
3 (Tip-Ring-Sleeve / stereo)
Connector Housing
Molded
Strain Relief
Yes, both ends
Signal Type
Stereo analog audio
Compatible Devices
Any device with 3.5mm stereo audio jack
Brand
Monoprice
Model
100644

Pros & Cons

👍 Pros

  • Molded connector housings and strain relief boots at both ends give the cable a noticeably more durable construction than bare-plug budget cables that fail at the joint first.
  • At 6 feet, the cable reaches comfortably across a desktop audio setup or a car console without excess slack bunching up around the connection points.
  • Standard 3.5mm TRS on both ends means zero adapter requirements for the most common device-to-device audio connection scenario.
  • The full TRS (stereo) wiring carries both channels without compromise — no signal loss from a TS cable mistakenly used in a stereo application.

👎 Cons

  • 6 feet may fall short for routing between components in a rack or across a room — users who need to span more distance will need a longer cable or an extension.
  • There is no braided or reinforced outer jacket — the cable is standard PVC, which works fine for stationary setups but may not hold up as well to repeated coiling and uncoiling in a mobile kit.
  • No gold-plated contacts are mentioned — while nickel or chrome plating is reliable for normal use, high-cycle applications may see contact wear over time.
  • Only one length option in this SKU — users who need 3-foot, 10-foot, or other lengths must source a different cable.

Frequently Asked Questions

TRS stands for Tip-Ring-Sleeve — three conductors in one plug. That three-conductor design carries a stereo signal (left channel on tip, right on ring, ground on sleeve), unlike a two-conductor TS plug which is mono only. Yes, this cable transmits full stereo audio.
Yes — as long as both devices use a 3.5mm stereo jack (which covers the vast majority of laptops, phones, tablets, and many powered speakers), this cable makes a direct connection with no adapter needed.
The cable passes whatever signal is present at the source — line level, headphone level, or aux level. It does not amplify or attenuate. Match the signal levels on your devices appropriately; the cable itself is electrically transparent at these signal types.
Strain relief boots are the tapered rubber sleeves where the cable meets the plug housing. They prevent the cable from bending sharply at the connection point — the most common failure location on cables that get plugged and unplugged frequently or left under tension.
For most desktop setups — laptop to nearby speakers — and for car auxiliary connections where you're routing from a center console to a phone in your lap or pocket, 6 feet is comfortably sufficient. It also routes cleanly from a turntable preamp to a receiver on the same shelf.

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