With the Hcard-702 memory card from Hypersynth, a Yamaha DX7-II, DX11 & DX-7S can be expanded by up to 6400 memory locations distributed over 100 banks. 100 banks of 64 sounds each contain not only the original factory presets of the DX7-II, but also 16 banks of carefully selected new sounds. Thanks to the Hcard-702, you no longer have to search for old RAM memory cards in ads that can manage even a small number of sounds. Equipped with a display and buttons, it navigates comfortably through the sound banks, which can also be overwritten by the user. The write protection function prevents unwanted changes to existing programs in the heat of battle.