GK Fusion S 500w amp

Mint condition (as new).
6 stage, all-tube preamp - 500w class D power amp.
See this link for full specs
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Here's a Google AI review.,

The Gallien-Krueger Fusion 500S is a 500-watt, ultra-light Class D bass head featuring an all-tube preamp (three 12AX7s), offering a blend of warm, harmonic tube complexity and modern, punchy solid-state power. It is highly regarded for its versatility, portability, and robust, illuminated interface designed for touring musicians.

Key Features & Performance

Tube Tone: The 3-tube preamp provides rich, warm, and responsive tones ranging from clean to thick distortion.

Power & Portability: Delivers 500W, suitable for medium to large venues, while remaining compact and lightweight.

Versatile EQ & Voicing: Features a 4-band active EQ, plus "Bump," "Contour," and "Presence" switches for extensive, precise tone shaping.

Overdrive: Includes a footswitchable tube-driven overdrive channel for gritty tones.

Connectivity: Equipped with a balanced DI output (pre/post EQ), effects loop, headphone out, and aux input.

Reliability: Uses a unique interconnected circuit board system designed for durability against vibration and temperature changes.