• The Rhodes Chroma was the last synthesizer designed by ARP Instruments before they went bankrupt in 1981.
• It was completed and released by CBS/Fender, who had acquired Rhodes and ARP’s assets. This is why it's sometimes branded as "Rhodes Chroma".
• It's a polyphonic analog synthesizer with digital control—a groundbreaking hybrid for its time.
• The Chroma is velocity-sensitive, features aftertouch, and supports 16 voices, though later configurations sometimes had 8 or fewer.

About the Model 2101

• The 2101 model is the standard Rhodes Chroma keyboard (as opposed to the Chroma Expander, which is module-only).
• It features a full 64-key weighted keyboard.
• Only about 3,000 units were made between 1982 and 1984.

Serial Number 21010090

• The serial number 21010090 likely means:
• • Model: 2101 (standard Chroma keyboard)
  • Unit #: 0090 – This would suggest it is the 90th Chroma ever made, placing it very early in production—possibly 1982.
  • Early units like this are often more valuable to collectors, especially if they are in working condition or have been refurbished.

• CC+ MIDI retrofit boards for better MIDI integration.
• Power supply replacements (original PSUs were notoriously unstable).
• New CPU boards for reliability.