We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Brent Butterworth Brent Butterworth is a writer dedicated to audio gear. He ...

Lance Cpl. Matthew Work, a machine gunner with India Company, 3rd Battalion, 6th Marine Regiment, Regimental Combat Team 7, Marine Expeditionary Brigade-Afghanistan, listens to music from his CD ...