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The GR Bass AT CUBE 800 brings serious stage-ready bass amplification into a remarkably portable carbon fiber combo. Pairing an 800W RMS amplifier with a custom 12-inch Jensen/Sica speaker and adjustable horn tweeter, it offers the clean, responsive GR Bass sound in a package weighing just over 20 pounds. For gigging bassists who want to travel light without giving up the flexibility of a full-featured amplifier, this is a compelling solution.
Beyond its lightweight construction, the AT CUBE 800 includes an onboard tuner, four-band EQ, selectable midrange frequencies, Deep and Bright filters, an effects loop, balanced DI output, headphone connection, and auxiliary input. Whether you're practicing at home, recording, or carrying your rig into a venue, the AT CUBE 800 is designed to keep setup simple while giving you substantial control over your sound.
GR Bass combines its AeroTech carbon fiber cabinet technology with its Pure Sound amplification philosophy to produce an unusually lightweight, powerful bass combo. The AT CUBE family brings together a compact 12-inch speaker system, comprehensive onboard controls, and flexible connections for rehearsal, studio, and live performance.
Gain & Master: Adjust the instrument input level and overall amplifier volume independently.
Four-Band EQ: Low, Mid Low, Mid High, and High controls allow detailed tone shaping. Both midrange bands have three selectable frequency settings.
Deep & Bright: Switchable filters provide additional low-end weight or high-frequency presence.
Pure Sound: Access the amplifier's more direct, minimally colored sound.
Onboard Tuner / VU Meter: Convenient front-panel tuning and level indication.
Headphones & Aux Input: Useful for private practice and playing along with external audio.
DI Output: Balanced output with pre/post selection, ground lift, and dedicated DI level control.
Effects Loop: Send and return connections for external effects.
Speaker Output: Speakon connection for an appropriate external speaker cabinet.
Amplifier Rating: 800W RMS at 4 ohms
Internal Cabinet Impedance: 8 ohms
The 800W rating describes the amplifier's output at its rated 4-ohm load. It does not mean the included 8-ohm speaker receives 800 watts.
When considering an extension cabinet, confirm the combined speaker impedance and safe operating configuration before connecting additional speakers.
Woofer: 1 x 12" Custom Jensen/Sica
Cabinet Power Handling: 450W RMS (AES)
Tweeter: 1" Horn Driver
Tweeter Adjustment: On/off and three-position control
Bass Reflex: Rear Ported
Frequency Response: 38 Hz–18 kHz
Sensitivity: 98 dB SPL
Manufacturer: GR Bass
Model: AT CUBE 800-24
Type: Carbon Fiber Bass Combo Amplifier
Amplifier Output: 800W RMS at 4 Ohms
Cabinet: 1x12", 450W RMS, 8 Ohms
Weight: 9.2 kg / 20.17 lbs
Dimensions (W x D x H): 15.75" x 13.98" x 17.91"
Input Voltage: 115V / 230V, automatic selection
Front Panel: Tuner/VU Meter, Gain, Deep, Four-Band EQ, Bright, Midrange Frequency Selectors, Pure Sound, DI Level, Headphone Level, Master, Mute
Rear Panel: DI Output, Pre/Post DI, Ground Lift, Effects Send/Return, Speakon Speaker Output, 9V 300mA Output, Fan Studio/Live Mode