Roland followed their first MC303 Groovebox with the well-specified MC505. Now there's the MC307, with a spec more like the 505, a price closer to that of the 303, and more DJ-friendly features.
The SPV355, launched in the late '70s, was intended to allow the pitch of instruments such as guitars and saxophones to control analogue synth sounds — which it does with varying degrees of success. Fortunately, it has other tricks up its sleeve, as Chris Carter explains.