JitterBug FMJ USB 2.0 Noise Filter (Data & Power) • Enables more spacious and compelling sound • Dual Discrete NoiseDissipation Circuits reduce all forms of internal noise in both the sending and receiving electronics • Full Metal Jacket (FMJ) with hinged Carbon-Loaded Noise-Dissipation input cover protects against external noise • Reduces jitter and packet errors • Use one JitterBug in series with almost any USB DAC, including DragonFlys Black and Red; experiment with DragonFly Cobalt • For an additional improvement, use a second JitterBug in parallel—always desirable with DragonFly Cobalt