Sansui Electric · AU-series integrated amplifiers

AU-111

Sansui's last and best valve integrated - 45 W from 6L6GCs in fixed-bias AB1, with lifetime-guaranteed transformers.

Catalogue code: AU-111
Years: 1965
Type: integrated amplifier (tube)
Valves & speakers: 45 W + 45 W, 6L6GC push-pull, valve rectified
Lifecycle: retired
Confidence: High

Specifications

Watts: 45
Watts_basis: per channel, 8 ohm load unless noted in rated_load
Channels: 2
Technology: tube
Class_of_operation: AB1 (fixed bias push-pull)
Tubes: 4x 6L6GC
Weight: 24.5 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. Valve unit: high voltages inside.

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 1965; components only push the date later.

03 / Value

What moves the price

Sold-listing reading: fair JPY 135,333, good JPY 146,000, excellent JPY 360,000 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 (135333 / 146000 / 360000), NOT condition grades - neither source publishes a per-condition split. Sale/completion dates span 2026-01-16 to 2026-10-14. Channels counted: yahoo_closed x2, mercari_sold x1. No exchange-rate conversion was applied anywhere in this file.