Class D vs Class A Education

IMO, the type of music would strongly lead to one's preference over the other. Class D has all the efficiency and power reserves for strong and demanding type of music. On the other hand, Class A typically has the refinement and finesse to track and amplify the signal more faithfully. Acoustic instruments like flute, oboe, violin, piano, harpsichord...etc., their natural timber and harmonics are somewhat rendered more realistically with Class A amps. With difficult to drive speakers and demanding type of musical preferences, Class D would be the preferable choice.

Inna, I suppose dollar for dollar, D amps win and would likely be close to the ideal in general (97~98% level). Small, light weight, low price ..etc are a big plus for us in a typical home. On the other hand if price, space and heat is not a concern, then the uber expensive high wattage Class A amps would be the ultimate choice that would bring us closer to the last 2~3%.