The programming definitely improved the sound. I was skeptical because I've read mixed reviews and you don't know everyone's background with audio SQ. Somebody's post I read a while back summed it up well, saying it mellowed the shrill highs and improved the bass. The system works together now. Before, the highs, mids, and lows seemed out of sync and inconsistent. Some songs the highs would be overpowered, while others the bass was overpowering. The programming fixed all that. Sound output is progressive and predicable throughout the entire volume range.