Dear Florian,

Although I have every respect for your opinion, I strongly disagree with your advice of dispensing with the NAD 2200 amp for a mere $50 worth of repairs. Your technician's opinion here is without merit because maybe he isn't very well versed with this amp's capability and sonic performance. This amp runs in class A/B at low volumes and switches to class B operation at higher volumes becuase the audio circuit is fully complementary DC-coupled class A/B and remains a strong favourite with budget systems. You only need to read all the glowing reviews elsewhere on this website to corroborate this. To replace it would mean a further investment of $300-500 for an equivalent match in the second-hand market. Clearly an economically 'unviable' solution.