The SAM-32SD is a 32GB SD/SDHC card that is rated at 90 MB/s for read and write speeds (620x). The SAM-32SD has been optimized and extensively tested to ensure fast and flawless performance when used with MixPre Series of audio recorders (MixPre-3 and MixPre-6) and the 6-Series production mixer/recorder line (688, 664, 633).