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

A-1

The first of Yamaha's A-series integrateds and the start of the 'Natural Sound' styling era.

Catalogue code: A-1
Years: 1977
Type: integrated amplifier
Valves & speakers: 70 W/ch into 8 ohms (80 W/ch into 4 ohms)
Lifecycle: retired
Confidence: High

Specifications

Watts: 70
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: 15.8 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 1977; components only push the date later.

03 / Value

What moves the price

Sold-listing reading: fair EUR 70, good EUR 325, excellent EUR 750 EUR · 24 sold listings · as of 2026-10-17. Asking prices only - these are live listings, not completed sales. 24 listing(s) in EUR observed on 2026-10-17 via the HiFi Shark marketplace aggregator; min/median/max of the observed asks are used as fair/good/excellent, 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): GBP x1, JPY x2, NOK x1, PLN x4, TWD x1, USD x2.