Gr Bass Cube 800 BLK

Historical Context and Positioning in the Range

The Cube 800 fits within the GR Bass philosophy: offering a bass combo capable of delivering serious performance (rehearsals, concerts, recording via DI) while maintaining a compact size and quick setup. With its announced power of 800 W RMS and 1x12 format, it positions itself as an "all-in-one" solution for bassists who want to travel light without sacrificing volume headroom or the fine adjustments needed to adapt to different bands and venues.

Who This Amp Is For

The GR Bass Cube 800 is aimed at the intermediate to professional bassist seeking a versatile combo capable of covering both rehearsal and stage, while remaining practical at home thanks to the headphone output and auxiliary input. Its 1x12 format is ideal for styles where punch and definition are desired: pop, rock, funk, fusion, gospel, contemporary music, and more broadly any situation where the bass must remain clear in a dense mix.
For larger stages, the presence of a pre/post DI facilitates a clean and consistent front-of-house feed, while the Speakon output allows for extension with an external cabinet when more stage coverage is needed.

Features and Innovations

The Cube 800 emphasizes efficiency: an integrated tuner and VU meter to monitor input level, a Gain control to adjust attack and thickness, and an EQ designed to quickly carve out your space in the band. The controls include a 4-band EQ (Low, Mid Low, Mid High, High), complemented by two frequency selectors: 3 frequencies for low-mids and 3 frequencies for high-mids. Practically, you can choose the midrange area to work on to shift from a round, smooth sound to a more biting and present bass without fighting the room acoustics.
Two quick filters get straight to the point: Deep (to thicken and add foundation) and Bright (to add attack and clarity). The Pure Sound mode provides a more direct and natural response (handy when you want to hear the character of your instrument and pickups). On the practical side, the Send/Return effects loop is ideal for placing modulation, delay, or multi-effects, and the DI section offers a pre/post choice (useful depending on whether you want to send your sculpted sound or a more neutral signal to the console). The DI Volume with "antibump" function helps avoid sudden level changes during adjustments.

Sound

With its modern amplification architecture and 12-inch speaker, the Cube 800 aims for a fast, clean, and defined reproduction, with comfortable volume headroom. The 12-inch speaker offers an excellent compromise: enough body to support the low end while maintaining good precision in attacks. The 1-inch horn driver, combined with the 3-position tweeter selector, allows you to adjust brightness according to your instrument (passive/active), playing style (fingers, pick, slap), and wiring.
In clean mode, you get a stable sound with good note clarity and dynamics that respond well to right-hand nuances. Increasing the Gain can thicken the tone and bring out the mids to better "cut through" the mix, while the Deep and Bright filters serve as effective shortcuts to switch from a vintage-mellow register to a more modern and articulate aesthetic. Thanks to the DI and pre/post choice, it is easy to maintain sound consistency between stage, rehearsal, and recording.

Technical specifications

Category	Bass combo	EQ	4 channels
Effects loop	Yes	Headphone output	Yes
Cabinet impedance (Ω)	8 Ω	Color	Black
Category	Amplifier	Finishing	Black tolex
Speaker diameter	12"	Power output	800 W
Number of speakers	1

Power	800 W RMS (AES standard)	Bass reflex	rear ported
Configuration	1x12 inches	Sensitivity	98 dB SPL
Impedance	8 ohms	Frequency response	38 Hz to 18 kHz
Speaker	12-inch custom Jensen/Sica	Selector	3 Mid Low frequencies
Driver	1-inch horn	Dimensions	W 40 x D 35 x H 43 cm
Tweeter	adjustable via 3-position switch	Weight	12.7 kg