Cardas Audio Signature RCA Caps

Editors' Choice Award - The Absolute Sound

Keep EMI and RFI Put of Unused RCA Jacks

Help keep airborne EMI and RFI noise out of unused female RCA jacks and do it in style with Cardas Signature RCA Caps.

Cardas Signature RCA Caps are functionally identical to standard RCA Caps from Cardas. But Signature Caps sport a designer look. They fit over unused female RCA connectors on the back of an amp, preamp, receiver, and other components to eliminate EMI and RF noise absorption.

Unlike traditional shorting plugs, these caps do not short the inputs, and many preamps don't like shorted inputs.

Award-Winning Performance

Cardas Audio Signature RCA Caps won an Editors' Choice Award from The Absolute Sound magazine.

"Pop these RCA shorting plugs into your preamplifier’s unused inputs and you’ll hear a blacker background, more micro-dynamic detail, and an overall cleaner sound."

"They Seem to Improve Every Area"

"They seem to improve every area in a small way, not hugely better, but different enough to matter. Most noticeable was the treble cooled down, stage width and image placement were more precise, and there was some beefing up of the low frequencies," observes arshall Knack, positive-feedback.com, February 6, 2020.

"Both RCA and XLR caps are such a no-brainer and so affordable, it would be a shame not to acquire them, particularly if you live in an urban hotbed of air-borne pollution."

"These Work"

"I installed 12 (on my preamp only) RCA RF caps from Cardas. I noticed cleaner vocals, a bit more air to the music," reports DarrenV1070, forum.psaudio.com, March 2020.

"I have another 12 coming, as I will do amps and DAC and any input on the system gear with RCA inputs. So, these work."

An Elegant and Effective Solution

Signature Caps are made of nickel-plated brass. The famous Cardas nautilus shell logo is 'floats' in a golden finish on a jet black background. The caps look so elegant, you'll be tempted to keep them on your desk. But use them to prevent both EMI and RFI from entering the chassis through the RCA dielectric. This is a more elegant and probably more effective solution than either shorting plugs or wrapping the plug in aluminum foil.

Protection from Dust and Corrosion

Cardas Signature Caps have the additional benefit of protecting the RCA input from dust and corrosion. When you're ready to use the input, pull off the Signature Cap and your input will be clean and ready.

Package of 12.

Editors' Choice Award - The Absolute Sound

"Pop these RCA shorting plugs into your preamplifier’s unused inputs and you’ll hear a blacker background, more micro-dynamic detail, and an overall cleaner sound."

- The Absolute Sound, December 2023

"Both RCA and XLR caps are such a no-brainer and so affordable, it would be a shame not to acquire them, particularly if you live in an urban hotbed of air-borne pollution."

- Marshall Knack, positive-feedback.com, February 6, 2020

"I installed 12 (on my preamp only) RCA RF caps from Cardas. I noticed cleaner vocals, a bit more air to the music. Worth the 60 bucks so far. I have another 12 coming, as I will do amps and DAC and any input on the system gear with RCA inputs. So, these work."

- DarrenV1070, forum.psaudio.com, March 2020

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