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Is it complete and working cleanly, or are you buying a project? At £70, this looks like a fair-to-good ask rather than a bargain-basement steal. The SM-30 is a modest vintage integrated with about 22 watts per channel, so value here is more about usable condition and originality than brute power.
That makes it worthwhile if you want a compact, period-correct amp for efficient speakers, especially if the knobs, switches, and inputs are quiet and the casing is tidy. Sharp’s small integrateds are simple, easy to live with, and can be a neat entry into vintage hi-fi. At this level, a working unit with no crackle, no channel imbalance, and the right plugs or adapters is the upside; if it needs service, the price stops being special very quickly.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Sharp is a Japanese electronics company founded in 1912 by Tokuji Hayakawa, who began with a small metalworking workshop in Tokyo. The company’s name comes from its early “Ever-Ready Sharp” mechanical pencil, and its broader corporate identity grew out of a long history of practical consumer innovation rather than specialist audio alone.
In audio, Sharp has been associated mainly with mainstream consumer hi-fi and AV rather than ultra-audiophile hardware. Over the decades it has produced items such as radios, televisions, receivers, and other home-electronics components; in the modern era its audio presence is tied more to compact systems and mass-market electronics than to a deep catalog of standalone amplifiers, DACs, turntables, or headphones.
In market terms, Sharp is best understood as a heritage Japanese consumer brand with periodic involvement in audio, not a dedicated high-end hi-fi marque. For knowledgeable buyers, that means the brand carries historical legitimacy and recognition, but its reputation is closer to reliable mid-market electronics than boutique or reference-grade specialist audio.
See all Sharp listings on RADAR.
