Not got inside yet and before doing so, less I disturb something. Inserting a mono jack in one of the input channel I/O Insert sockets, kills throughput to phones and also amp hiss at the phones output. The PMP1280 SM ,out there, does not seem to have a control line attached to the I/O insert socket switches at all , so different there , unless there is some sort of auto lack-of-signal mute circuit somewhere. At the moment I wanted to rule out something silly in the way of a wrong switch setting combination or something. The user manual shows nothing that could cause this.
- posted
8 years ago