Description
If you’ve ever plugged into a GK head at a gig and felt that punch hit your gut before your ears even caught up, you already know what the 1001RB-II is about. This has been the backline standard for bassists who want their tone to feel as good as it sounds — from basement practice to arena stages. At the heart of it is Bob Gallien’s G.I.V.E. Technology, a valve-effect circuit baked into the RB Series design since the beginning, giving these heads that warm, fast-responding growl that’s instantly recognizable.
This open box unit gives you the full 700 watts at 4 ohms for your low end, bi-amped with a separate 50-watt horn circuit so your highs stay articulate and controlled — with independent volume controls for tweeter and woofer so you can shape the balance exactly how you want it live. The active 4-band EQ, adjustable contour, presence, and 4/5-string voicing switches make dialing in your tone fast and intuitive, whether you’re chasing vintage warmth or modern clarity.
- 700 watts @ 4 ohms plus dedicated 50-watt horn (bi-amp)
- Active 4-band EQ
- Adjustable contour, presence, and 4/5-string voicing
- Boost (valve effect)
- Separate tweeter and woofer volume controls
- Effects loop and tuner out with mute
- XLR out with level, ground lift, and pre/post switch
- Speakon and 1/4″ outputs
- 19 x 3.5 x 8 in (2-space rack)
- 22 lbs
Compact, light enough to carry in one trip, and built with the circuitry that’s made GK a fixture in club and studio rigs for generations — this is bass power that doesn’t ask you to compromise on feel.
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