All our products use high quality 24-bit oversampling converters from AKM or Cirrus Logic. These are the converters used in our current product line:
CS-4272 - AudioFire12, AudioFire8, Layla3G, IndigoIO
CS-42426 - Gina3G
CS-4392 - IndigoDJ
AK4528 - MiaMIDI