Quad (Acoustical Manufacturing) · Quad "current dumping" era

Quad 405-2

The revised 405 that stayed in production into the 1990s - the highest-volume Quad power unit.

Catalogue code: Quad 405-2
Years: 1982–1993
Type: power amplifier (stereo)
Valves & speakers: Revised 405 with improved input stage, 100,000 built
Lifecycle: retired
Confidence: High

Specifications

Watts: 100
Channels: 2
Technology: solid-state
Inputs_outputs: RCA/banana

Safety

Solid-state: as 405 - verify output stage before purchase.

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, Version & era marker.

02 / Bounds

The model year is a floor

Nothing predates 1982; components only push the date later.

03 / Value

What moves the price

Sold-price aggregates are not collected yet, so the archive gives no figure — condition, originality of the transformers and a documented recap move this model more than any list price.