Used Yamaha G100-112 Solid State Guitar Amp 1 x 12

Estimated Year: Early 1980s

Made in: Japan

Includes Case/Gig Bag: No

Used Yamaha G100-112 solid state guitar combo amplifier. These vintage Yamaha G-series amps have become something of a cult favorite among players looking for huge clean headroom, warm analog solid-state tone, and incredible pedal platform performance. Built in Japan during the early 1980s, the G100 series was designed to compete with amps like the Roland JC-120 and Fender Twin Reverb while offering Yamaha’s own unique voice and flexible EQ section.

This G100-112 features a powerful 100-watt solid-state design paired with a Yamaha JA3062 12" speaker. The amp includes dual channels, spring reverb, high and low inputs, direct out, footswitch capability, and one of the standout features of the series — a parametric EQ section that allows for extremely precise tone shaping. These amps are known for loud, punchy cleans, excellent reliability, and taking pedals exceptionally well.

Features

- Yamaha G100-112 guitar combo amplifier

- 100-watt solid-state power section

- Made in Japan

- 1x12 Yamaha JA3062 speaker

- Two-channel design

- High and low inputs

- Built-in spring reverb

- Parametric EQ section

- Pull-bright and pull-fat functions

- Direct out

- External speaker output

- Reverb and A/B footswitch jacks

- Casters installed for easier transport

Condition

Good vintage condition with normal signs of age and use.

- Fully functional

- Cosmetic wear on cabinet corners and hardware

- Carry handle has a visible crack but remains attached

- Some dust, scuffs, and discoloration from age

- Original Yamaha speaker installed

- Back panel and control plate show normal aging

Store Policies

- All items are tested before listing and again before shipping.

- Orders typically ship next business day.

- Shipping is available to the continental U.S. only.

- We do not accept trades on shipped items.

- Returns are accepted within 48 hours of delivery. The buyer covers return shipping, and a 20% restocking fee applies. If you have any questions before buying, feel free to message us—we’re happy to help.