I'm having a problem with the latest Matrix Mini DAC. The sound drops out for a split second periodically but not at regular intervals. It seems very random. I have two older Matrix Mini's that work flawlessly. Corresponding with the company they say, "The older Mini-i use AD1955 D/A chip...

I have an E-202 that I am having repaired right now. It got too hot and fried the part that protects the speakers. A friend of mine is repairing it and says we have to replace the 2SA497-0 transistor which they don't make anymore. At his recommendation I bought the 2N4033 from Central...