Gallien-Krueger Bi-Amp Bass Amp Head Mark II – Used
Deliver the punchy, legendary "GK growl" to your live rig with this used Gallien-Krueger Bi-Amp Bass Amp Head Mark II. Renowned for its immense headroom, lightning-fast transient response, and signature active 4-band EQ, this amplifier delivers the professional-grade tone and reliability that working bassists have relied on for decades.
This unit is in Excellent Condition. It shows only very light signs of standard use—mostly minor cosmetic surface wear on the chassis housing that in no way impacts its structural integrity or sonic performance. The front control panel is clean, all pots, switches, and jacks operate smoothly, and the proprietary bi-amp system functions perfectly. Fully inspected and performance-tested in-house. Grab a legendary piece of bass amplification history ready to drop straight into your rack case and hit the stage!
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Condition: Used (Excellent)
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Cosmetics: Light signs of use, clean overall appearance.
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Operation: 100% fully functional, thoroughly tested.
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Signature Bi-Amp Output System: Features independent high and low-frequency power amp sections designed to drive compatible GK bi-amp cabinets for ultimate crossover clarity and punch.
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Active 4-Band EQ: Precision shaping controls featuring specialized voicing filters (Contour, Presence, and 4-band active equalization) to dial in everything from modern scooped punch to vintage midrange bark.
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Legendary G.I.V.E. Technology: Incorporates Gate-Induced Valve Effect circuitry for natural, touch-sensitive tube warmth and harmonic overdrive without sacrificing note definition.
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Robust Front-End Controls: Includes variable input gain with a -10dB pad for active/passive pickups, boost control, and an active master volume.
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Professional I/O Routing: Equipped with balanced direct output (XLR) with ground lift and pre/post EQ switches, effects loop, tuner output, and high-current bi-amp speaker outputs.
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Tour-Ready Build: Rugged steel chassis built to withstand the rigors of heavy gigging and professional touring schedules.
Professionally Inspected & Ready to Play Every pre-owned amplifier at BCR Music & Sound receives a thorough technical inspection before it reaches our showroom or website. We verify transformer health, output power, pot cleanliness, jacks, switches, and overall circuit performance. This ensures your bass head arrives operating at peak performance right out of the box.
Secure Packing & Shipping We take shipping heavy, high-end electronics seriously. Every amplifier is carefully protected using custom heavy-duty packing materials, internal corner bracing, and shock-absorbing isolation inside the shipping carton, then fully insured for transit. Whether you’re across Pennsylvania or across the country, you can buy with confidence knowing your gear has been prepared to arrive safely and exactly as described.