I have a couple of Class D integrated amps: Peachtree Nova125 & NAD Master M2. They are very different in quality IMO.
The Peachtree soundwise is pretty good. Perhaps, it does have a little harshness some associate with Class D when compared to good Class A amps. However, I may have a unit specific problem with the DAC portion, which may be to blame for this (I will have to sort out with Peachtree). It also can get slightly congested with complex passages (bands & orchestras) at higher volumes. At it's price point, it does an excellent job. There would not be many/any Class A amps at this price, unless you bought some older, used ones. It also does have a great feature set for digital inputs (only one analog).
The NAD M2 is a very, very, fine amplifier. It is not a typical Class D amp, more of a powered DAC, using a relatively new technology. It is very musical, which is not typical in Class D amps. It is absolutely dead silent when no signal is played, which makes it extremely dynamic. Very detailed, excellent bass control, mids are rich and authentic. Makes high quality recordings sound exceptional. Given that it all you need is a source, the M2, and speakers, it is extraordinary value. (See glowing reviews in Stereophile and Absolute Sound that explain the technology)
Main drawback of the M2 is that it does not have a USB input, so a S/PDIF bridge is required in that case. It does have both RCA & XLR analog inputs if required. The analog signals will undergo an A/D conversion because everything is digital in the amp, so purists may object. Personally, I don't notice any degradation when fed an analog signal.
IN summary, the Peachtree is good value for the price, but (with my unit) may not satisfy those willing to spend big dollars on high-end Class A or Class A/B amps. The NAD M2 (costing several thousand more than the Nova125) is a good challenger for Class A & A/B amps costing quite substantially higher. Definitely worth auditioning. I believe it is no longer manufactured, but newer NAD products will use the technology.
The Peachtree soundwise is pretty good. Perhaps, it does have a little harshness some associate with Class D when compared to good Class A amps. However, I may have a unit specific problem with the DAC portion, which may be to blame for this (I will have to sort out with Peachtree). It also can get slightly congested with complex passages (bands & orchestras) at higher volumes. At it's price point, it does an excellent job. There would not be many/any Class A amps at this price, unless you bought some older, used ones. It also does have a great feature set for digital inputs (only one analog).
The NAD M2 is a very, very, fine amplifier. It is not a typical Class D amp, more of a powered DAC, using a relatively new technology. It is very musical, which is not typical in Class D amps. It is absolutely dead silent when no signal is played, which makes it extremely dynamic. Very detailed, excellent bass control, mids are rich and authentic. Makes high quality recordings sound exceptional. Given that it all you need is a source, the M2, and speakers, it is extraordinary value. (See glowing reviews in Stereophile and Absolute Sound that explain the technology)
Main drawback of the M2 is that it does not have a USB input, so a S/PDIF bridge is required in that case. It does have both RCA & XLR analog inputs if required. The analog signals will undergo an A/D conversion because everything is digital in the amp, so purists may object. Personally, I don't notice any degradation when fed an analog signal.
IN summary, the Peachtree is good value for the price, but (with my unit) may not satisfy those willing to spend big dollars on high-end Class A or Class A/B amps. The NAD M2 (costing several thousand more than the Nova125) is a good challenger for Class A & A/B amps costing quite substantially higher. Definitely worth auditioning. I believe it is no longer manufactured, but newer NAD products will use the technology.