My Canadian spec 4kq has a temp gauge with actual numbers, and it runs around 100C most of the time. Cheers, Brady ------------- -----Original Message----- From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com]On Behalf Of Steve Meyer Howdy everyone! I am wondering what the operating temp should be on a 4kq. Thanks! slm