Hi Rikki,

Yep, the 8 Gb Sandisk SDHC card works great on my microARRANGER.
In fact, on page 130 of the Korg microARRANGER Users manual, it states the following:

You can use the following types of cards to save or load data to and from the microARRANGER's internal memory: • SD (High Speed, Ultra II, SDHC) • MMC • MicroSD with an SD adapter • MiniSD with an SD adapter

Note: Before you can use the SD/MMC card, you must format it on the microARRANGER. Don't use your computer or digi‐ tal camera to format (initialize) a card you plan to use with the microARRANGER. If the card was formatted on a different device, it may not work correctly with the microARRANGER

Note: The SD/MMC card is not included. It must be purchased separately.

Note: The microARRANGER supports SD cards with a power supply voltage of 2.7–3.6V.