AudioQuest JitterBug FMJ USB Noise Filter
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AudioQuest JitterBug FMJ USB Noise Filter
The AudioQuest JitterBug FMJ (Full Metal Jacket) is a compact USB noise filter that significantly improves digital audio performance by reducing RF noise and interference. Simply plug it into any available USB port to experience cleaner, more detailed sound from your USB DAC or audio system.
Key Features
- Full Metal Jacket (FMJ) Design - All-metal housing provides superior RF shielding and durability
- Dual-Function Noise Reduction - Filters both data line noise and power line noise simultaneously
- Plug-and-Play Operation - No drivers or software required, works immediately upon connection
- Parallel Noise-Dissipation Circuit - Actively drains RF noise away from USB power and data lines
- Universal Compatibility - Works with any USB-equipped device including computers, DACs, and audio interfaces
- Stackable Design - Use multiple JitterBugs for enhanced noise reduction
Technical Specifications
- Manufacturer: AudioQuest
- Model: JitterBug FMJ (Full Metal Jacket)
- Product Type: USB Noise Filter
- Connection Type: USB Type A (Male to Female)
- Housing: Full metal construction for RF shielding
- Noise Reduction: Parallel noise-dissipation circuit
- Compatibility: USB 2.0 and USB 3.0 ports
- Power Requirement: Bus-powered (no external power needed)
- Dimensions: Compact inline design
- Weight: Lightweight portable design
How It Works
The JitterBug FMJ uses a sophisticated parallel noise-dissipation circuit to reduce both data line and power line noise. RF noise generated by computers and other devices can contaminate USB signals, degrading audio quality. The JitterBug's dual-function design actively filters this noise, resulting in improved clarity, better dynamics, and a lower noise floor.
Applications
- USB DACs and digital-to-analog converters
- Computer audio systems and media players
- USB audio interfaces and recording equipment
- Powered USB speakers and headphone amplifiers
- Any USB-connected audio device
Usage Recommendations
For optimal results, plug the JitterBug into an available USB port on your computer or USB hub. When used with a USB DAC, insert the JitterBug into a separate USB port (not in series with the DAC cable). Multiple JitterBugs can be used simultaneously for enhanced noise reduction - try one in the DAC's USB port and another in a nearby port for maximum benefit.
Why Choose AudioQuest JitterBug FMJ?
The Full Metal Jacket version represents AudioQuest's premium JitterBug design, featuring all-metal construction for superior RF shielding compared to the standard plastic version. This upgrade provides even better noise isolation and durability. AudioQuest's decades of experience in noise management and signal integrity make the JitterBug FMJ an essential accessory for serious digital audio enthusiasts.
What's Included
- 1x AudioQuest JitterBug FMJ USB Noise Filter
- User documentation
AudioQuest is a world leader in audio cable and accessory design, known for innovative solutions that deliver measurable performance improvements.
Caring for your Speakers and Amplifiers
To Keep your equipment safe these are some best practices to note. Please be advised that this is only to reduce the risk of misuse and is not an exhaustive list.
Speakers
- Speaker terminals are marked red and black, ensure your amplifier to the speakers are wired on the same colours
- Ensure no loose speaker wire from the red touches a loose wire from the black as this will lead to a short circuit and damage either the speaker, the amplifier or both.
- Not all speakers are designed to play at max volume, kindly consider the pairing of your amplifier and speakers
- Speaker cabinets cannot be replaced please handle with care.
AV & Stereo Amplifiers
- If your amplifier has HDMI ports, ensure all devices are off before plugging in the HDMI cable
- Turn off the amplifier before swoping out or adding speaker cable
- Amplifiers generate heat, place them in a well ventilated space. if possible avoid having anything on top of the unit.
- adding a surge protector can assist with power dips which are likely to damage your devices. Isotek and Furman are industry standard.
- Dusty environments can sometimes lead to accumulation of dust in the electronic components that might affect heat regulation
Shipping & Returns
- Free shipping on orders over R500 within the country.
- Standard delivery within 2–5 business days. Delays will be communicated. This might vary slightly depending on your location.
- Return items in original condition for a full refund. (unopened state)
- Returns that are open/unboxed will be subject to a handling fee. Refunds will only be processed after testing the unit.