Gr Bass CUBE 350 BLK

Historical Context and Positioning Within the Range

The Cube 350 positions itself as a bass amp focused on performance and versatility: comfortable power, a portable combo format, and a sufficiently precise control section to cover both "plug and play" needs and fine-tuning in a band setting. Its equipment (full DI, effects loop, tuner, vu-meter) naturally places it in the category of combos designed to handle rehearsals, studio, and stage without multiplying peripherals.

Who This Amp Is For

The Cube 350 is aimed at the intermediate to advanced bassist who wants a combo capable of handling real playing dynamics while remaining simple to adjust. In rehearsals, its power reserve and dispersion (12-inch + tweeter) facilitate line clarity, even with an energetic drummer. In the studio, the adjustable DI, Studio/Live fan mode, and headphone level control allow for clean work, from direct recording to re-amping. On small to medium stages, the DI output (Pre/Post) and GND lift secure integration with the mixing console, with a convenient mute switch for silent instrument changes or tuning. Style-wise, it is comfortable from funk (attack and precision), to rock (midrange that cuts through), as well as pop, reggae, and modern aesthetics requiring clear bass and controllable high frequencies.

Features and Innovations

The user interface focuses on essentials: Gain to adjust the input level according to your bass (passive or active) and Master volume to control the overall level. The Deep Filter provides extension and a sense of depth in the low end, useful for thickening fingerstyle tones, giving foundation in reggae, or boosting bass at low volume without overdriving the EQ. The 4-band EQ relies on advanced midrange work thanks to Mid-low and Mid-high controls: perfect for sculpting presence (attack, growl, articulation) and avoiding clashes with the kick drum or guitars.

For stage and recording, the adjustable DI output is complemented by a Pre/Post DI switch (choice between a raw or processed signal) and a GND lift switch to reduce hum from ground loops. The vu-meter helps maintain a clean level, while the built-in tuner and mute switch enable quick and silent transitions. The effects loop easily accommodates delay, chorus, or multi-effects, and the adjustable headphone output allows comfortable volume control for home practice. The 3.5mm Aux input is ideal for playing along with backing tracks. Finally, the 9V DC 300mA output can power a compatible accessory, handy for streamlining a small setup.

Sound

With its 12-inch neodymium speaker and 1-inch tweeter with 3-position adjustable level, the Cube 350 aims for a sound that is both solid in the lows and precise in the highs. The 12-inch driver delivers firm, fast, and clear bass, while the tweeter allows you to adjust the brightness according to your playing style: softer for a round sound, or more open to highlight attack, slap, and harmonics. The rear bass reflex enclosure enhances the sense of depth and breadth, especially useful at stage volume. Thanks to the frequency response of 38 Hz - 18 kHz and a sensitivity of 98 dB, the amp maintains good definition and effective projection: you can work a clear and articulated clean tone, then thicken the lows and mids with the Deep Filter and EQ to move from a "modern hi-fi" sound to a grittier, more present tone in the mix.

Technical specifications