AudioQuest Jitterbug FMJ
Many tens of thousands of music lovers are already enjoying better audio enabled by the original AudioQuest JitterBug USB Noise Filter - whether plugged into a car's USB jack, or a laptop computer, or a USB "service-only" jack on an Ethernet Streamer, etc…
Of the original model, Stereophile's John Atkinson wrote, "I have no hesitation in declaring, loudly and longly, that I can think of no way to spend USD$49 that would make me more enjoy my computer-based audio than the AudioQuest JitterBug. Try one—or two—for yourself."
Now, JitterBug FMJ, with its Full Metal Jacket raises the stakes.
Whether used in series (in-line) or in parallel, JitterBug significantly reduces contamination from RF generated by a computer, car, or other device - JitterBug FMJ also thoroughly addresses environmental RF Noise taking advantage of this vulnerable interface.
The new metal case is the most obvious change, though even the seemingly innocuous hinged "rubber" piece covering JitterBug's output is crucial to JitterBug's improved performance. That little black "door" is RF-proof thanks to the material being substantially RF-absorbing Carbon.
Employ one JitterBug in series between any computer, smartphone, NAS, streamer, or car audio system and a USB input. For an additional sonic improvement, use a second JitterBug in another unoccupied USB port - in parallel to the first - except with JitterBug FMJ's front door closed.
A JitterBug in series with DragonFlys Black or Red always helps those wonderful creatures fly higher and faster. However, it's best to experiment when putting a JitterBug in front of a DragonFly Cobalt - which itself employs some of JitterBug's filtering, and so the two filters in series can help or hurt performance depending on specific equipment and context.
Regardless of which DragonFly or any other considerations, a 2nd JitterBug in parallel is always a delightful improvement as it pulls more RF Noise off the USB power bus - which is why and how a JitterBug makes just as big an improvement even when plugged into service-only or update-only USB ports on many devices.
Noise reduction and noise dissipation is AudioQuest! One can't hear our modern world's pervasive RF Noise itself, but the compromises it causes robs us of detail and contrast, and outright buries so much subtlety. Fight back with JitterBug FMJ.
Series or Parallel Applications: JitterBug FMJ is extremely easy to use and will offer reliable results for many years to come. It can be used in a series or parallel application. Employ one JitterBug FMJ in series between any computer, smartphone, NAS, streamer, or car audio system and a USB input. For an additional sonic improvement, use a second JitterBug FMJ in another unoccupied USB port in parallel to the first with second JitterBug FMJ's front door closed.
- Use one JitterBug FMJ in line with any computer and USB DAC (digital-to-analogue converter).
- Use JitterBug FMJ with other locally connected USB devices; such as hard drives, printers, and cameras, to effectively reduce audio interference.
- Use JitterBug FMJ with USB-enabled network devices, such as routers, NAS devices, and streamers.
- Use JitterBug FMJ with mobile devices into audio systems in the home and in the car.
- Use an additional JitterBug FMJ in parallel with the first for improved playback performance.
Please Note: A second JitterBug FMJ in parallel is always a great improvement as it pulls more RF Noise off the USB power bus, which is why and how a JitterBug FMJ makes just as big an improvement even when plugged into service-only or update-only USB ports on many devices.
Our Take
This is one of those little accessories that seems to be constructed of pure magic. This full metal jacket version of the JitterBug looks pretty substantial though so maybe it has some cunning technology to back up the magic. Whatever is hidden inside its solid metal can, it sure seems to work. Try one or two in your system today and say it isn't true.
Main Features & Specifications
- Design: USB 2.0 Noise Filter (Data & Power)
- Dual-Function Noise Filter cleans up both the data and power lines of USB ports
- Durable All-Metal Housing shields against external noise
- USB Type A Connections (male plug on one end, female port on the other)
- Carbon-Infused Rubber Door on female port helps to absorb and eliminate RF noise
- Can be used with compatible USB-equipped home audio components, computers, car stereos, and portable devices
- Reduces Jitter and Packet Errors
- Removes Parasitic Resonance — a form of resonant distortion
- Presents a more dynamic, natural, and dimensional listening experience
- Manufacturer's Warranty: 1 Year
Note: Features & Specifications Subject To Change Without Notice. E&OE.