The Spectrum Synthesiser: a mixture of EMS Synthi, Sequential Pro-One and Roland SH-5. It’s simply one of the most outstanding monophonic analog synthesizers in history. A synthesizer with some big plusses and some (smaller) minuses. Its sound is strong and full of character. Its modulation possibilities are incredible, partially even unique. And then: It’s a true DIY kit-synthesizer.
“Originally published (Mar – May 81) in the first three issues of E&MM, the Spectrum hit some sort of trouble (perhaps connected with the supply of kit parts not coming on stream?), and was held over and repeated, with improvements in two large instalments in Jan/Feb 1982.”
(Peter Forrest: The A-Z of Analogue Synthesisers, Part Two, p. 204)