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Everything In Music Since 1958
Everything In Music Since 1958

Gallien-Krueger 2001RB 2 Way 500+50W Bass Amp Head

Out of Stock
Original price $2,180.75
Original price $2,180.75 - Original price $2,180.75
Original price $2,180.75
Current price $1,525.00
$1,525.00 - $1,525.00
Current price $1,525.00
About Inventory Status

Call or text us at 301-946-8808.

In stock: It is in stock and available to ship or pickup. Apparel must be shipped from another location and is not available for in-store pickup. We can usually ship or have these items available for pickup by the next business day if they don't require inspection, special handling, or setup. Our pickup location is 11151 Veirs Mill Rd. Silver Spring, MD 20902.

📆 Preorder: It is on the way to our warehouse. We can't predict when preorder items will arrive due to current supply chain issues. If you place an order for one of these items someone will contact you to estimate the delivery date.

Out of stock: We don't currently have it available but you're not out of luck yet. We still may be able to get it. If you order one of these items we will contact you with an estimated fulfillment date. You have the option to cancel the order if you change your mind.

Special order: The item is so special that it needs to be custom ordered for you. Some of these items are works of art and have to be made individually. Orders for special order items must be prepaid and we cannot accept cancellations or refunds.

█ Sold out: We don't think we can get this item because it was either discontinued by the manufacturer or was limited in quantity. If you want or need this item call or text us. Sometimes we can help you track down the item through other sources or help you find something similar.

About Item Conditions

Call or text us at 301-946-8808.

New: The item is brand new as received from the manufacturer with a full manufacturer warranty. Instruments such as guitars, snare drums, drum kits, brass and woodwind instruments may be opened for photography and quality control inspection and may not be in a factory sealed box.

Mint or Open Box: The item may have been opened and tested but has been repackaged. The original packaging may have superficial issues but the item itself and any originally included accessories are in perfect, like new condition.

Display Model: These items are so cool that we put them on display in our legendary shop. The condition is brand new as received from the manufacturer with manufacturer warranty. Rest assured, these items undergo a very careful inspection before shipping.

Demo: These items have been on our sales floor for demo purposes and will likely show signs of use. The original packaging may no longer be included, but you can be assured that you are receiving an awesome item and an awesome price.

Used: The item is used. These item may have varying degrees of wear. Please read the description for information about the condition of the item. Used items do not carry a warranty.

B or C Stock: Factory refurbished. These items were purchased from the manufacturer in a refurbished condition. They will show some cosmetic issues, but nothing that would impact performance. Being that these are sealed from the manufacturer, we generally do not open these to photograph the cosmetic issues. They are guaranteed to work and may have a limited warranty or you may purchase an extended warranty in some cases. Please see the listing description for item specific information.

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Get Unparalleled Flexibility And Design With The Gallien-Krueger 2001RB 2 Way 500+50 W Bass Amp Head

BI-AMP FLEXIBILITY- Unique Horn Bi-Amp system sends the high frequencies to the horn through a separate 50W amplifier. This has many advantages: The horn level is controlled from the front panel. The horn is not overpowered by the larger amp so failures are reduced. When the woofer amp hits the rails (growl) the horn stays clean.

TONE SHAPING- 4 band active EQ and voicing filters based on the classic 800RB provide extensive tone shaping capability.

DRIVE- Drive channel with independent EQ and volume for moderate grit or full grind.

CONNECTIVITY- Balanced DI with level control, Pre/Post and Ground Lift switches to feed the house, Tuner output, FX Loop for connecting outboard accessories on the front. And two ¼ inch speaker jacks and two twist lock speaker connectors to ensure reliable and safe cabinet connections, mounted in the rear.

POWER TO SPARE- Two 540 watt power amps allow bridged or dual mono operation for expanded cabinet and speaker load options.

HARMONIC COMPLEXITY- Boost control adds tube like harmonics and signature "GK growl" using G.I.V.E. technology.

BIG IRON- Dual rail Analog power amp and toroidal transformer provide the current required to control the speakers at high volume.

VARIABLE Q- Inherited from the 800RB, this unique design varies the EQ bandwidth to retain a musical response even at extreme settings.

Output Power

  • Woofer Amplifier: 2 x 540W @ 2 Ohms
  • 2 x 360W @ 4 Ohms
  • 2 x 240W @ 8 Ohms
  • 1080W bridged @4 Ohms
  • 650W bridged @8 Ohms
  • Horn Amplifier: 50W @ 4 Ohms

Input Section

  • Maximum Input Level: 0.6V Rms
  • With -10dB pad1.6V Rms
  • Input Impedance: 1M Ohm
  • Send output impedance: 220 Ohms
  • Return input impedance: 50k Ohms
  • Tuner Output Impedance: 10k Ohm
  • Direct Output Impedance: 500 Ohms


  • Bass: +10db @ 60Hz
  • Lo-Mid: +6db/-10db @ 250Hz
  • Hi-Mid: +6db/-10db @ 1kHz
  • Treble: +14db @ 7kHz

Voicing Filters

  • String Bass Button: +11db@20Hz
  • Contour: +2db@50Hz / -10db@500Hz / +3db@7kHz
  • Presence: +9db@10kHz


  • Crossover: Triple pole constant voltage crossover at 5kHz
  • Noise: -90db referenced to 500W, A weighted
  • Cooling: Continuously Variable-Speed Fan
  • Amplifier Protection:
  •     Full short circuit, thermal & RF protection
  •     Stable into reactive and mismatched loads
  •     Five second muted warm up
  • Power Requirements, U.S.A./Canada: 120V/60Hz
  •     (full power) 2250W
  •     (average power) 595W

Manufacturer: Gallien-Krueger
Model: 2001RB
SKU: I210891-N-0-WHXB
UPC: 836989000164

We are Chuck Levin's Washington Music Center

Maryland, Virginia, and Washington DC's legendary music shop. Family-owned and operated since 1958. Buy gear the way it was meant to be bought, from a store that's been there through it all and has the vibe to prove it. We're staffed with musicians and industry experts, people that live and breathe music gear. Our mission is to help you find the right gear for your project, that thing that will bring you the most joy out of what you do. We're an authorized dealer for almost every brand, we stock items the other stores don't, so you can try before you buy. Stop by our Wheaton, MD showroom and see for yourself.

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