Yamaha (Hi-Fi) · A-series integrated amplifiers

A-2000a

Yamaha's Dual unit Class A flagship: a pure class-A unit and a high-power class-AB unit running together through the ZDR circuit.

Sold-price reading for this model →

Catalogue code: A-2000a
Years: 1987
Type: integrated amplifier
Valves & speakers: 130 W/ch class AB plus a parallel pure class-A amplifier (Dual Amp Class A with ZDR)
Lifecycle: retired
Confidence: Medium

Specifications

Watts: 130
Watts_basis: per channel, 8 ohm load unless noted in rated_load
Channels: 2
Technology: solid-state
Class_of_operation: A + AB (Dual Amp Class A)
Weight: 26 kg

Safety

Mains-powered vintage Yamaha: the V-FET devices in the B-1/B-2 are long out of production and fail if the bias drifts, so never run an unrestored unit hard. Japanese-market units are 100 V - use a step-down transformer.

01 / Witnesses

What applies here

Marks that can be entered for this maker: Model / catalogue 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 1987; components only push the date later.

03 / Value

What moves the price

Sold-listing reading: fair JPY 20,500, good JPY 22,500, excellent JPY 44,500 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 (20500 / 22500 / 44500), NOT condition grades - neither source publishes a per-condition split. Sale/completion dates span 2026-09-23 to 2026-10-04. Channels counted: yahoo_closed x3. No exchange-rate conversion was applied anywhere in this file.