The Onkyo MD-133 has the unusual honour of being the first Hi-MD component ever released. Part of Onkyo’s INTEC 275 range, it combines gracefully with Onkyo’s other INTEC 275 components to form a mini component Hi-Fi system, integration with RI serial interface. Manufactured since 2005 to 2011 at least.
Content adapted from: Onkyo Press Release [*] Onkyo Press Release (MiniDisc Wiki mirror) [*] Minidisc.org MD-133 Page [*] Onkyo discontinued product page [*] Archived Onkyo Product Page [*] Archived Onkyo Product Page (MiniDisc Wiki mirror) [*] Intec 275 Page [*] Intec 275 Page (MiniDisc Wiki mirror) [*] av.watch [*]
Onkyo MD-133 User Manual JP
Onkyo MD-133 User manual ENG (scan)
DSP is Sony CXD2687-001GG (combined ATRAC/servo and microcontroller) for models after 2006/2007, and Sony CXD2686-223GG for early issued.
Details of the pins and connections on CXD2687-001GG DSP by looking at the Sony Service Manual for the MZ-RH1.
Onkyo RI interface two connectors.