: It features calibrated errors and specific pit-to-land transitions to test a player's limits.
: Since it was a service-only tool, it is no longer in production. Finding one in perfect condition is described by experts as "virtually impossible". Technical Purpose and Applications sony yeds18 test disc exclusive
Verifying the player's ability to handle data interruptions or "calibrated errors". : It features calibrated errors and specific pit-to-land
: A series of sine waves (e.g., 100Hz, 1kHz, 10kHz, 20kHz) at 0 dB for measuring output voltage, distortion, and channel separation. and channel separation.