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 has a 49-key full-size keyboard with no velocity sensitivity. It was designed in the mid-1980s. You get polyphonic voice selection and a built-in rhythm section, and the rhythm can be adjusted with internal trimmer pots. It doesn't do much, but it has been described as fun, engaging and charming to play, and it is 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 is an affordable, entry-level synth 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 been listed around $90 on Facebook Marketplace. Common problems are non-working keys and power plug failures. Some people consider the built-in rhythm unusable, but it can be modified with the trimmer pots inside the case.
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