Roland SIP-300
The Roland SIP-300 is one of the thinnest files in the Archive's Roland section. No manual, brochure, or spec sheet has surfaced; production years, price, dimensions, and circuit details are all unrecorded, and the Archive's "synth" classification is the only firm label we have.
Period press from the late 1970s does contain a likely sighting, under the name "SP-300" — probably an OCR truncation of "SIP-300," though the mismatch is worth flagging honestly. Modern Recording (November 1979, p.44) covered the SP-300 in a roundup of modular rack-mount amplification systems, describing it as a high-resolution power amplifier delivering 150 watts RMS into 4 ohms or 200 watts into 2 ohms. If that is our unit, the "synth" tag may be a mis-file — the period description reads as a pro-audio power amp, not a synthesizer.
Roland's own advertising in the same period (Modern Recording, November 1979, p.4) promoted the Rack-system philosophy behind these units — discrete-component technology, a pitch-to-voltage synthesizer, digital delay, and the Dimension D — and Polyphony (September 1979, p.14) described the Rack as housing seven units and connecting to separate speaker cabinets. The SIP-300's exact place in that lineup, however, remains unconfirmed. That is the state of the record as it stands.
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