A compact 60 W power unit sold in two versions (B200a and B200b) as the partner to the A100.
Class-A unit in a small chassis: it runs hot and the original electrolytics are past their design life. Early MF units have no protection circuitry, so a DC fault can take the speakers with it.
Marks that can be entered for this maker: Model / catalogue number, British capacitor code (Hunts, Mullard), Japanese capacitor code (Nichicon, Chemi-Con, ELNA), EIA component code, Version & era marker.
Nothing predates 1990; components only push the date later.
Sold-listing reading: fair SEK 5,900, good SEK 5,900, excellent SEK 5,900 SEK · 1 sold listings (thin sample — indicative only) · as of 2026-10-17. Asking prices only - these are live listings, not completed sales. 1 listing(s) in SEK observed on 2026-10-17 via the HiFi Shark marketplace aggregator; with fewer than three observations the same min/median/max is recorded as an estimate, not as an asking aggregate, which is a reading of the ask spread, not a condition grading. Listings in other currencies were seen and counted for the spread but are not converted here (see the journal): EUR x1, TWD x1.
Evidence: Audio Database — EN mirror of period catalogue sheets · HiFi Shark — live listings aggregator