AudioQuest - Jitterbug USB Filter Dual-function USB and data filter Reduces the noise and ringing afflicting both the data and power lines on USB ports Insert into the USB input of any computer, laptop, DAC, receiver, streamer, car, or smartphone significantly minimizes jitter and packet errors A second JitterBug can also be used in parallel with the first Solves Sound-Degrading Problems Inherent to Every Computer-Audio Setup