Free Shipping on US orders above $49
What You Need to Know
What Is This Cable and What Does It Do?
This cable lets you connect a source with a 3.5mm headphone-style output — a smartphone, laptop, DAP, or sound card — to an amplifier, receiver, or powered speakers that use RCA inputs.
The 3.5mm (1/8") mini-plug is the small stereo connector found on phones, computers, and most portable players. The other end of this cable splits into a stereo pair of RCA plugs — the small red and white connectors that go into "AUX" or "Line In" jacks on a typical stereo component.
Sydney is the top of the AudioQuest Bridges & Falls line. It brings flagship-tier conductor metal and AudioQuest's most refined dielectric design to the 3.5mm-to-RCA shape — the highest-performance option in this configuration.
Which AudioQuest Family Is This From?
Sydney sits at the top of AudioQuest's Bridges & Falls series. The ladder runs Tower → Chicago → Evergreen → Red River → Golden Gate → Mackenzie → Big Sur → Yukon → Sydney. Sydney is the destination — the most carefully engineered cable AudioQuest builds in this family.
What's Different About This One?
Sydney is built around AudioQuest's best Bridges & Falls engineering. Conductors are solid Perfect-Surface Copper+ (PSC+) — the highest-purity copper grade in this family.
"Solid" still means a single core per conductor. AudioQuest's view is that strand-to-strand contact in a stranded cable can introduce small distortions, and a solid core avoids that.
The insulation around the copper is called the dielectric. Sydney uses a polyethylene air-tube design, where the conductor is suspended inside a tube of polyethylene so that air surrounds most of the conductor.
Sydney also steps up to Asymmetrical Double-Balanced geometry. The signal and return conductors are sized differently because they do different jobs, and the cable's shield is grounded only at the source end so it doesn't carry signal current.
The shield uses AudioQuest's Carbon-Based Noise-Dissipation System (NDS) — a carbon-loaded layer that absorbs radio-frequency interference picked up by the shield.
One note for the spec-watchers: Sydney's flagship RCA-to-RCA version includes a 72-volt Dielectric-Bias System battery pack. That feature is not carried over to this 3.5mm variant — Sydney 3.5mm uses the higher-tier conductor, dielectric, geometry, and NDS architecture, but without the on-cable battery pack.
The conductors are direction-controlled. AudioQuest has been making analog audio cables since Bill Low founded the company in 1980, and Sydney represents the most refined point on that engineering ladder in this family.
Which Connector Configuration Do I Need?
If the destination has RCA inputs, you need this 3.5mm-to-RCA version. If the destination has its own 3.5mm jack, you need the 3.5mm-to-3.5mm version.
Where Does This Cable Belong in Your System?
Sydney is for systems that earn it — a serious integrated amp, revealing speakers or headphones, a quality source. It's the top of the Bridges & Falls line and not the place to start.
- Good fit: a high-performance DAP into a high-end integrated amp or preamp; a serious desktop computer-audio setup with a quality DAC; portable or near-field rigs where the rest of the chain is genuinely revealing.
- Not ideal: entry-level or mid-tier systems where Sydney would outclass everything else (look at Tower, Evergreen, Golden Gate, or Big Sur instead); connecting two RCA-to-RCA components (use AudioQuest's main interconnect line instead).
- Different connector configuration? See the Sydney 3.5mm-to-3.5mm version.
Length: Use the shortest cable that comfortably reaches. Measure the actual route and add a little slack.
Pairs Well With
- High-end integrated amplifiers with RCA AUX inputs.
- Reference-grade DACs with 3.5mm outputs.
- Premium powered speakers with RCA inputs for serious desktop or near-field listening.
- AudioQuest Big Sur 3.5mm-to-RCA — the step below, if Sydney is more cable than the system needs.
- AudioQuest Sydney 3.5mm-to-3.5mm — the same flagship cable in a mini-to-mini shape.
Features & Specifications
Sydney is the top of the Bridges & Falls line:
- Solid Perfect-Surface Copper+ (PSC+) conductors — the highest-purity copper in the Bridges & Falls family.
- Polyethylene air-tube dielectric — the conductor is suspended in a mostly-air dielectric for the lowest electrical losses in this line.
- Asymmetrical Double-Balanced geometry — signal and return conductors sized for their roles, with the shield grounded at the source end only.
- Carbon-Based Noise-Dissipation System (NDS) absorbs RFI picked up by the shield.
- 3.5mm mini-plug on the source end and stereo RCA pair on the destination end.
- Direction-controlled conductors with an arrow showing the source-to-destination flow.
- Limited lifetime warranty for original owners through Audio Advisor.
Quick-Reference Specifications
| Conductor | Solid Perfect-Surface Copper+ (PSC+) |
| Geometry | Asymmetrical Double-Balanced |
| Dielectric | Polyethylene Air-Tube |
| Noise Dissipation | Carbon-Based NDS |
| DBS | Not included on this 3.5mm variant (RCA-to-RCA Sydney includes 72V DBS) |
| Connectors | 3.5mm mini-plug (source) and stereo RCA pair (destination) |
| Direction Control | Yes |
| Available Lengths | Multiple lengths stocked — see length selector |
| Warranty | Limited lifetime, original owner, authorized U.S. dealer |
Frequently Asked Questions
What kind of source can I connect with this cable?
Anything with a 3.5mm headphone-style output: smartphones, laptops, tablets, DAPs, computer sound cards, and certain DACs. The other end goes into RCA inputs on an amplifier, receiver, preamp, or powered speakers.
How does Sydney compare to Big Sur in this same configuration?
Both share the same architectural backbone — solid PSC+ conductors, polyethylene air-tube dielectric, Asymmetrical Double-Balanced geometry, and Carbon-Based NDS. Sydney's edge comes from refinements in build quality and materials at AudioQuest's top-of-line tier. Neither 3.5mm variant carries the 72V DBS battery pack found on the flagship RCA-to-RCA Sydney.
Does this cable have a battery pack (DBS)?
No. The flagship Sydney RCA-to-RCA model includes a 72V Dielectric-Bias System battery pack, but the 3.5mm-to-RCA Sydney is built without it. Everything else from Sydney's top-tier architecture is here.
How does this compare to a generic mini-to-RCA cable?
The comparison isn't really fair. Sydney uses solid PSC+ conductors and AudioQuest's most refined dielectric, where generic cables use stranded copper of unspecified purity and standard PVC. Sydney is built for systems where every link matters.
Will this cable improve the sound of my system?
If the rest of your components are revealing enough, this is the cable level where differences become easier to hear. Take advantage of the 60-day return window to listen for yourself.
What length should I get?
Use the shortest cable that comfortably reaches. Measure the actual route — not the straight-line distance — and add a little slack.
What's the warranty?
AudioQuest cables purchased from an authorized U.S. dealer carry a non-transferable, original-owner limited lifetime warranty. Audio Advisor is an authorized AudioQuest dealer, so you're covered.
? 40+ Years of Expertise — Since 1981, we’ve helped over a million music lovers find the right gear.
? 60-Day Money-Back Guarantee — Take your time. Listen, enjoy, and make sure it’s right for you.
? Real Experts, Real Help — Call us at 800-942-0220, weekdays 9am–6pm EST.
? Free Shipping — On orders over $49, delivered to your door.
? Flexible Payment Options — Financing available so you can start listening now.
Want to learn more about analog interconnects? Visit our Learning Center for guides, tips, and expert advice.
