Gallien-Krueger Legacy 1001 RB 700W Bass Amp Head

Our goal was to create a new standard in bass amplification. After 5 years of design work, 20 revisions, and thousands of hours in the lab, we’ve created an unrivalled analogue bass amplifier. Unprecedented performance, studio-quality sound, boundless features, punch that never quits, indestructible analogue power, and a metal enclosure machined to perfection. The 1001RB and 2001 RB Legacy achieves everything we set out to do and more. This is the new standard of excellence for the modern professional bass player.

Designed by founder and president Bob Gallien, the RB Legacy is the result of more than 50 years of knowledge and dedication to his craft. His unrelenting drive for innovation and refinement has not only left a lasting influence on the world of modern bass amplification but also raised the bar for what a bass amplifier can do. The RB Legacy sets the stage for a new era in professional sound equipment and aims to meet the needs of the most discerning of players, whether that’s on the road, in the studio, or at home.

Class H Power Amp

The RB Legacy 1001 and 2001 are equipped with Class H power amplifiers, which have two power supplies. One that operates lower output levels and one that handles higher output levels. These amps are designed to be played loud, and with this configuration, it not only improves reliability but also allows you to play hard into the rails (maximum output) without overheating the amplifier or worrying about your tone giving out, a problem with many bass amplifiers.

Riding the Rails

Most amps start to run out of juice as they reach their maximum output, but the RB Legacy delivers almost twice the current required to develop full power. So, you can keep control over the speaker cone, even in extreme conditions. Without this extra capacity, you get an unresponsive sound, lacking punch or definition. When you play really loud — or “into the rails” — the RB Legacy produces a powerful, growly sound. Otherwise known as “riding the rails.”

Adjustable Limiter

Another new feature of the RB Legacy series is an adjustable limiter. This can be used to “limit” at the rail (maximum output) and can be adjusted to pull the signal off the rail, keeping the output clean. This helps tame excessive signal peaks, reduce unwanted transients and prevent unwanted distortion.

Cabinet Simulation

Turn on the cabinet simulation to get a faithful representation of a live cabinet feel that can be used with your DI and headphone signal. This gives you more control over your DI tone whether you’re recording, playing live, or practising at home.

Studio Headphone Amp

Inspired by some of the industry’s most sought-after studio headphone amplifiers, our class A headphone amp delivers studio-quality power into any headphones from 8 to 300 ohms. Whether at home or on stage, you’ll have your tone on tap.

Voicing Filters

The RB Legacy includes three filters that completely revoice the amplifier, maintaining a neutral volume, so you don’t have to adjust the volume controls after turning them on or off. Bump adds a round bloom… contour boosts the highs and lows while dropping the mids… and presence adds a sheen to the top end.

Active EQ

All GK amplifiers use a proprietary, active, serial, variable Q, four-band equaliser. The controls are in series, so they won’t add or cancel frequencies that compromise your sound. As you adjust, the active equaliser reshapes based on the cut or boost you are adding. This produces an extremely wide range of usable tone settings.

Boost

The RB Legacy uses two selected field effect stages configured to optimise the Gate Induced Valve Effect (G.I.V.E.), or tubey grit, first pioneered in the 800 RB. This can be adjusted to fatten up your sound or to produce heavy overdrive. We have added an edge control to help you shape the sound to your preference.

• Solid State Class H Bass Amplifier
• 4-band active serial variable-Q Equaliser
• 700 Watt Switch-Mode Power Amp
• Footswitchable Overdrive (Footswitch Included) with 2 selected field effect stages configured to optimise the Gate Induced Valve
• Effect (G.I.V.E.) pioneered in the legendary GK 800RB amp
• 3 switchable Voicing filters
• “Bump” - adds a bloom to the low end and fattens it up
• “Contour” - boosts the highs and lows and drops out the mids
• “Presence” - adds presence and crisp highs to the sound
• Seamlessly adjustable input Trim – for tailoring the input gain exactly to any active or passive instrument
• 2 SpeakON outputs for cabinet connections
• Balanced XLR Output with Ground Lift switch selectable Pre and Post EQ
• Unbalanced 6.3 mm serial Effects Send and Return Loop
• 6.3 mm Footswitch Input and Tuner Output
• 3.5 mm Aux Input and Stereo Headphones Output
• Circuit Boards with Gold Plated Connectors and unique interconnection system - eliminates problems that can develop from long-term use
• Universal power input - for seamless 100 to 240 Volt operation
• Manufactured in the GK USA Factory

• Preamp: Solid State
• Power Amp: Class H, 16 Complimentary BJT’s in Each Power Amp Section
• Transformer: Custom Toroidal Transformer
• EQ: Active, Serial, Variable Q, Four Band, Bump, Contour, Presence Switches
• Inputs: 1 x 1/4", 1 x 1/8 (aux)
• Outputs: 2 x SpeakON (1001RB)
• 1 x XLR (direct out), 1 x 1/4" (tuner)
• Headphones: 1 x 1/8" (Studio Quality)
• Effects Loop: Unbalanced ¼” Send and Return
• Footswitch (Included): 1 x 1/4" (boost)
• Cooling System: 1 x Internal Fan with Thermal Speed Control (1001 RB) 
• Power Source: Standard IEC AC cable
• Chassis: Anodised Aluminium, Laser Etched Graphics
• Height: 5.25"
• Width: 17.2"
• Depth: 13"
• Weight: 25lbs