When I use the 4track mode with 48khz/24bits settings (mic/line combined) on the Zoom H4N I have data write errors with the Kingston SD4/16gb (SDHC type). Although it is on the “SD card approved list” I am unable to store my recorded data correctly: I get gaps and soundleaps. Cleaning contacts of the card did not help. The card was correctly formatted in the H4N as well.
When I record with 48khz/16bits settings I’ll no problems.