Casio CT-310
A 49-key polyphonic synthesizer from Casio's Casiotone line, typical of 1980s home keyboards.
Overview
The Casio CT-310 is a synthesizer keyboard in the Casiotone series produced by Casio. It features a 49-key full-size keyboard without velocity sensitivity. Designed during the mid-1980s, it reflects the era's approach to accessible electronic music instruments. The CT-310 offers polyphonic voice selection and includes a built-in rhythm section, which can be adjusted using internal trimmer pots. Though limited in versatility, it has been described as fun, engaging, and charming to play, often noted as a good beginner synthesizer.
Specifications
| Type | Synth / keyboard |
| Synthesis Type | Polyphony: Max: 8 (+ rhythm); Typical in use: 4 |
| Keyboard | 49 keys, full size, without velocity |
Context
The CT-310 is part of Casio's Casiotone line, which was abbreviated to "CT" in the mid-1980s. It represents a class of affordable, entry-level synthesizers typical of the 1980s, aimed at hobbyists and beginners. One user acquired the instrument at the 1986 Winter NAMM show in Anaheim, California.
Market
Current estimated used value ranges from $82 to $190. Examples have sold for $29.99 to $30 at Goodwill and listed around $90 on Facebook Marketplace. Common issues include non-working keys and power plug failures. The built-in rhythm, while considered unusable by some, can be modified via trimmer pots inside the case.
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