Gibson (amps) · GA Series

GA-77 Vanguard

25W 1x15 combo with reverb-era cosmetics (1954-1961).

Catalogue code: GA-77/GA-77 VANGUARD
Years: 1954–1961
Type: combo
Valves & speakers: 25W, 1-15 in. Jensen speaker, 1 x 12AX7, 1 x 12AY7, 1 x 12AU7, 2 x 6L6, 1 x 5V4
Lifecycle: retired
Confidence: Medium

Specifications

Watts: 25
Speakers: 1-15 in. Jensen speaker
Tubes: 1 x 12AX7, 1 x 12AY7, 1 x 12AU7, 2 x 6L6, 1 x 5V4
Channels: 2

01 / Witnesses

What applies here

Marks that can be entered for this maker: Transformer code, Speaker code, Pot code.

02 / Bounds

The model year is a floor

Nothing predates 1954; 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.