surdo wrote:I read about this somewhere that the "lab" RCA input doesn't have any protection from DC coming from a faulty pre-amp. Sorry I don't know much about electronics, by "cap" do you mean capacitor? I guess the balanced inputs are OK and I'll be using these mainly with a mixer.
Another doubt I have about the sunfire. I read in various posts about people sending their amps to very specific people for repair and that circuit diagrams are held by a select few. I live in Brazil and won't be able to send my amp to the states if something breaks. Do you think I'll be left with a lame duck if the amp needs repair, or are these amps pretty simple to fix by a good tech?
Correct. The "Lab" input does not have any protection. The "Normal" does. If you are using a source you know will not send a bad signal, as if you were in a lab, then you will get more true sound from the amp using the "Lab" because it bypasses the protection stuff.