Actually, dbpoweramp does not use the EAC engine. If you care, you can see the dbpoweramp site for details. "Spoons", the developer of dbpoweramp acknowledges the technical foundation/contributions of Plextools Pro XL and EAC but the engine and error correction approach is quite different.
These are not "theoretical" issues. The Hydrogen Audio site contains many technical threads on the differences in ripping software technology as well as the participants discovery of manufacturing defects, consistent errors due to drive firmware anomalies and software ripping errors due to an interaction of the defects on the discs, the firmware in the drive and the error correction software on the discs. These anomalies also impact the AccurateRip database. "Spoons" is also the developer of AccurateRip.
AccurateRip 2 is under re-development to address these issues because these anomalies impact AccurateRip also.
There is no need to panic, the good (JRiver) to excellent (dbpoweramp) rippers combined with a drive that outputs C2 error detection will give 99.5 to 99.9% accuracy (depending on your CD collection). Without taking extra precautions it's tough even to detect these errors. Again see Hydrogen Audio Forums if you care.
Sample sizes of a few 1000 CDs do not provide statistically significant confidence levels to prove a difference between 99.5% and "perfect"
These are not "theoretical" issues. The Hydrogen Audio site contains many technical threads on the differences in ripping software technology as well as the participants discovery of manufacturing defects, consistent errors due to drive firmware anomalies and software ripping errors due to an interaction of the defects on the discs, the firmware in the drive and the error correction software on the discs. These anomalies also impact the AccurateRip database. "Spoons" is also the developer of AccurateRip.
AccurateRip 2 is under re-development to address these issues because these anomalies impact AccurateRip also.
There is no need to panic, the good (JRiver) to excellent (dbpoweramp) rippers combined with a drive that outputs C2 error detection will give 99.5 to 99.9% accuracy (depending on your CD collection). Without taking extra precautions it's tough even to detect these errors. Again see Hydrogen Audio Forums if you care.
Sample sizes of a few 1000 CDs do not provide statistically significant confidence levels to prove a difference between 99.5% and "perfect"