Sansui Electric · CA/BA separate amplifiers

BA-3000

The power unit of the 1975 separate system: 170 W/ch, bridged to 340 W, with a class-A driver stage.

Catalogue code: BA-3000
Years: 1975
Type: power amplifier
Valves & speakers: 170 W + 170 W into 4/8 ohms, 340 W bridged
Lifecycle: retired
Confidence: High

Specifications

Watts: 170
Watts_basis: per channel, 8 ohm load unless noted in rated_load
Channels: 2
Technology: solid-state
Class_of_operation: not stated in the catalogue sheet
Weight: 22.6 kg

Safety

Mains-powered vintage Sansui: the AU-X1 and BA-5000 run high rail voltages and are unstable if the original capacitors have dried out. The 'Blackface' and 'Definition' faceplates are easily scratched; the wood cabinets are usually missing.

01 / Witnesses

What applies here

Marks that can be entered for this maker: Serial number, Model / catalogue number, British capacitor code (Hunts, Mullard), Japanese capacitor code (Nichicon, Chemi-Con, ELNA), EIA component code, Chassis / platter stamp, Version & era marker.

02 / Bounds

The model year is a floor

Nothing predates 1975; components only push the date later.

03 / Value

What moves the price

Sold-listing reading: fair JPY 110,000, good JPY 168,111, excellent JPY 185,021 JPY · 3 sold listings (thin sample — indicative only) · as of 2026-10-18. 3 completed sales in JPY observed on 2026-10-18. fair/good/excellent = min/median/max of the observed SOLD prices (110000 / 168111 / 185021), NOT condition grades - neither source publishes a per-condition split. Sale/completion dates span 2026-06-23 to 2026-10-12. Channels counted: mercari_sold x1, yahoo_closed x2. No exchange-rate conversion was applied anywhere in this file.