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Gorilla GG-25 Guitar Combo Amplifier (Modified)

Gorilla GG-25 Guitar Combo Amplifier (Modified)

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Page last updated Feb 15, 2026

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The Gorilla GG-25 Guitar Combo Amplifier (Modified) brings a fresh twist to a classic sound, tailored for guitarists who crave versatility and reliability. This 25-watt powerhouse is perfect for both practice sessions and small gigs, delivering a robust sound that can cut through the mix. The GG-25 is outfitted with a custom-modified preamp that enhances tonal clarity, ensuring your guitar's voice is heard with precision across a wide range of genres.

Equipped with intuitive controls, this amp offers a seamless user experience. The three-band EQ provides ample room for tonal shaping, allowing musicians to dial in the perfect sound for any situation. Additionally, the built-in overdrive channel offers a smooth transition from clean to gritty tones, making it a versatile tool for any guitarist's arsenal.

The Gorilla GG-25 also features a headphone output for private practice, allowing you to hone your skills without disturbing others. Its compact design makes it an ideal choice for musicians on the go, without compromising on sound quality. The modified internal circuitry ensures improved durability, making it a dependable choice for long-term use.

Key Features:

25 watts of power suitable for practice and small performances
Custom-modified preamp for enhanced tonal clarity
Three-band EQ for versatile sound shaping
Built-in overdrive channel for a wide range of tones
Headphone output for silent practice
Durable modified internal circuitry for long-lasting reliability
Compact design for easy transport

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over 9 years ago

Gorilla GG-25 Guitar Combo Amplifier (Modified)

I purchased this Gorilla GG-25 guitar combo amp new, back in the early 1980's, but, I quickly modified it by removing the speaker, cutting the cabinet down, adding a speaker output jack, and thus created a Gorilla GG-25 amp head. This amp is a bit noisy, but creates a thick and rich fuzzy sound when the Tube Stack circuit is employed. I also added a foot switch jack for the Tube Stack circuit, and later obtained a second GG-25 as a second hand gift, so now I can double my pleasure.The amp came stock with 1/4" headphone and line outputs and a 12-Volt DC jack option.

Roles:

Guitarist Bassist Drummer

Genres:

Electronic Rock Blues