Heath Company (Heathkit) · Heathkit hi-fi kits

Heathkit W-4M

Mono valve power unit kit of the early 1950s W series.

Catalogue code: W-4M
Years: year unknown
Type: valve amplifier kit
Valves & speakers: Mono valve power amplifier kit of the early 1950s W series
Lifecycle: retired
Confidence: Low

Specifications

Technology: tube
Channels: 2
Inputs_outputs: phono, tuner, tape

Safety

Valve chassis: HT rails stay live after switch-off; never power up on original electrolytics. Check the output transformers and the power transformer for overheating - replacements are unobtainable.

01 / Witnesses

What applies here

Marks that can be entered for this maker: 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

The introduction year is not documented, so the model narrows nothing.

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.