Greetings, Does anyone know how to disable the preamp on a Teletec U-150 amp? any help would be appreciated. Tnx in advance. 7 3 de N6EQ Chuck ____________________________________________________________ Click to get your online credit check report & score. http://thirdpartyoffers.juno.com/TGL2141/fc/BLSrjpTIjD3xNfh7e2n69AbBBXq9hYUjFJ1PisjM1rKsjIVlEEjgRJnMrI0/