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 Hcard-702 by HyperSynth is Soundware (e.g. samples or presets that load into other products).
Product Hcard-702
Developer HyperSynth
Price (MSRP)
Type / Tags Yamaha DX7IIMemory ExpansionYamaha DX7II Cartridge
Plug-in, App & Soundware Format(s)
System Memory
This is a Hardware product
PowerBus Powered
Operating System Availability
Download Released
N/A - Not Released
Max. 6 items
Latest Version Changes [view all]


Hypersynth multibank cartridge "Hcard-702" is specially designed for expanding the memory of Yamaha DX7II synthesizer. DX7II voice memory is limited to 64 presets (1 bank), which could be upgraded to 128 presets by adding an external Yamaha "RAM4" cartridge. "RAM4" is discontinued, rare, expensive and It relies on battery for data retention. These flaws make it not a good choice for DX lovers in modern age. "Hcard-702" can be used as a drop in replacement for Yamaha "RAM4" cartridge, it stores up to 100 banks without the worry of battery life and data loss.


  • Memory size: Up to 100 banks (6400 presets).
  • Instant access to different banks using touch buttons.
  • Two digits bank indicator display.
  • No need for battery.
  • Drop in replacement for Yamaha "RAM4" and "DATA ROM" cartridge.
  • Up to 18 pre-programmed soundbanks.
  • Hidden "Memory Protect" option.
  • External display support for listing all 64 presets in selected bank.

Categorized SoundBank:

"Hcard-702" comes with default DX7II factory soundbanks plus 16 soundbanks which selected carefully out of thousands available free banks for DX7.



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