Gibson (amps) · GA Series

GA-83 Stereo Vibrato

36W stereo vibrato amp with four 8 in. and one 12 in. Jensen speakers — the most complex GA design.

Catalogue code: GA-83 STEREO VIBRATO
Years: 1959–1961
Type: combo
Valves & speakers: 36W, 1-12 in. Jensen speakers, 4 x 12AX7, 1 x 12AU7, 3 x 6CG7, 4 x 6BQ5, 1 x GZ34
Lifecycle: retired
Confidence: Medium

Specifications

Watts: 36
Speakers: 1-12 in. Jensen speakers
Tubes: 4 x 12AX7, 1 x 12AU7, 3 x 6CG7, 4 x 6BQ5, 1 x GZ34
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 1959; 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.