Yupangco Electronics Corporation (YEC), a total professional audio system solution pr...

In 1999, I worked as an audio operator at a university theater in Colorado.

For over 40 years, Clear-Com’s intercom solutions...

Clear-Com's HME DX210 Wireless Intercom System...

How many of you know what these are? Photo Credit: militarychallengecoins.com They ar...