For the second day in a row, Logitech's Ultimate Ears pro audio brand has introduce a new set of monitor-grade earphones, with the Ultimate Ears 1 Pro Custom Monitor. Meant for in-studio recording and live stage performances, the single in-ear headphones let wearers hear external sounds along with the audio feeds. The single headphone has four speakers, with two devoted to reproducing the right channel and the other two for the left channel.
