Tag: synthesizer

2 matching upgrades

Showing 2 products.

StatusProductWhat it doesCompatibilityLinks
AvailableChecked Jul 28, 2026Cynthcartby Paul Slocum
sidsynthesizermidicartridgepaddledual sidstereopalntscsource available

Turns a C64 or C128 into a stand-alone SID synthesizer with keyboard performance, real-time controls, MIDI support, and optional six-voice stereo.

Protovision showed 12 orange Cynthcart 2.0.1 cartridges in stock at EUR 38 with a one- to two-week shipping estimate on 2026-07-28. The maker also publishes ROMs and source for personal use, but does not permit third-party cartridge sales. The project page labels 2.01 current while also listing a 2.0.2 source reorganization, so check the included ROM revision if that distinction matters.

Sources
  • Commodore 64 Exact model
  • Commodore 128 Exact model
Cynthcart project homepageBuy Cynthcart from ProtovisionSource, ROMs, and manual
AvailableChecked Jul 28, 2026MSSIAH Cartridgeby MSSIAH
sidsynthesizermidicartridgedual sidmousepaddle

Combines an integrated MIDI interface with five cartridge-resident SID music applications for sequencing, synthesis, drums, and low-fidelity sample playback.

The official contact page reported MSSIAH in stock on 2026-07-28, and its online order workflow was live. The cartridge and software are one integrated product: its MIDI hardware cannot be used by other applications, no MIDI OUT is provided, and the ROMs are not sold separately. A monitor is effectively required, and saving needs a compatible drive or separate Savyour.

Sources
  • Commodore 64 Exact model
  • Commodore 128 Exact model
  • Commodore SX-64 Exact model
MSSIAH product pageOrder MSSIAHManuals and downloadsCompatibility and FAQ