I have 2 questions in this thread. I have a Marantz 2250B from teenage days. I was reading some info about the lack of speaker protection say in the Marantz 1060 amp. It brings the question to me does the Marantz 2250B have speaker protection ? d/c protection etc Also my balance slide is not functioning so the service tech bypassed it. Is there an issue doing that? Thanks you for the info