An asking price of £1,282 for a Pioneer A-0012 with unknown condition is highly ambitious and likely overpriced compared to the typical used market. Recent Japanese listings show this amp selling around ¥690,000 (roughly £3,600) for active retail, but auction prices have dropped to £2,400–£2,800 after discounts and shipping, while a 1979 unit in Japan recently fetched £1,000 (¥190,000) at a trade-in shop. Your listing sits near the top of the realistic range for a working unit, but without confirmed condition, it feels risky at this level.
The A-0012 is a rare 1979 integrated praised as the “father” of the legendary A-700, offering warm, full-range sound with solid build quality that still appeals to vintage hi-fi fans. If this is truly original-owner, clean, and fully tested, it could be a worthwhile collectible buy. However, at £1,282 with unknown condition, you should demand proof of operation, capacitor health, and speaker protection status before committing—this price only justifies itself if the amp is in excellent, unrestored shape with no hidden issues.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.