I have an m4.0t amp that I have loved with a C-1 pre-amp. There are some issues with the m4.0t now (one channel seems to produce a lot of static noise, hiss, some crackling in the speakers) and I have tried the amp with other pre-amps and the speakers with other amps and there is not static or hiss. The problem seems to be getting worse.
I am wondering if it makes sense financially to have the m4.0t repaired/modified (if that is possible) or to put the costs of these repairs into buying something else, like a Sunfire 300x2 amp? Any suggestions would be greatly appreciated.