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Yamaha DX7 Data Cartridge by HyperSynth
Hcard-701 by HyperSynth is Soundware (samples or presets that load into other products).
Not Yet Released
System Memory

This is a Hardware product

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Hypersynth multibank cartridge "Hcard-701" is specially designed for expanding the memory of Yamaha DX7 synthesizer. DX7 voice memory is limited to 32 presets (1 bank), which could be upgraded to 64 presets by adding an external Yamaha "Data RAM" cartridge. "Data RAM" 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-701" can be used as a drop in replacement for Yamaha "DATA RAM" cartridge. it stores up to 400 banks without the worry of battery life and data loss.


  • Memory size: Up to 400 banks (12800 presets).
  • Instant access to different banks using touch buttons.
  • Two digits bank indicator display.
  • No need for battery.
  • Drop in replacement for Yamaha "data RAM" and "Voice ROM" cartridge.
  • Up to 24 pre-programmed soundbanks.
  • Hidden "Memory Protect" option.
  • External display support for listing all 32 presets in selected bank.

Categorized SoundBank:

"Hcard-701" comes with default DX7 factory soundbanks, plus 16 soundbanks which selected carefully out of thousands available free banks for DX7.

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